The website Create Digital Music posted this with conclusion and expounding more on what they talk about in the video, so to read it go here:
http://createdigitalmusic.com/2013/05/why-mobile-low-latency-is-hard-explained-by-google-galaxy-nexus-still-android-of-choice/#more-29322

It is a good read regarding Latency and devices and some tips and tricks that is useful for any audio application.
Read it here:
http://www.mikrosonic.com/faq

So go and take a listen here:
http://sunvox.blogspot.com.es/2013/05/sunvox-music-best-of-may-2013.html?spref=tw

Just sent Andreas the developer an email saying that the interview with him got posted 
and he sent me one back to say that he had just released a new pretty big update! 
Well here is the information regarding the new update:

Automation support for Master Pan/Vol and EFX chain
Ability to change the Play Position(long press)
Edit Position-Follow Mode(long press on Loop)
Functions to delete User-SoundSets, Patterns and Pattern Sets
Setting to allow long playing samples to overlap pattern changes
Setting to enable Monophony
Several bugs fixed
Pattern Set improvements:
-Song size from 0..999
-Improved Song recording behaviour
-Advanced Pattern Change types (check the pdf docs)
-Individual Position/Bar copy between Slots

Playstore link:
G-Stomper Beat Studio

Happy to be interviewing the Developer/Programmer/Creator 
of one of the more bad azz applications for Android. 
And the most complete usable one made for live performance.

This is what he says himself about his app:

G-Stomper is a highly optimized Beat Making Application for doing Electronic Live Performances on the move. It's a feature packed, Step Sequencer based Drum Machine/Groovebox, a Track Grid Sequencer for Beats, a Note Grid Sequencer for Melodies, a Piano Roll, 24 Drum Pads, an Effect Rack, a Master Section, a Line Mixer and a Live Pattern/Song Arranger.

But that is selling himself short as it is also a DAW for your samples with a very flexible modulation system of many parameters. It started as a Groovebox for Android but with the latest updates it have turned into something more but still keeping the original Groovebox single window aspect if you so desire...
Well there is a Demo version of the app so try it out if you haven't!
And if you did try it before and found it confusing/ hard to use try again as with the new Step sequencer for building your beats and the note sequencer window it is a whole new user friendly experience.

So now for the important stuff!!!

To start off the interview I asked Andreas to introduce himself-

Planet-h.com, based in Switzerland, is just myself, a passionate and sometimes obsessed developer, since around 15 years in software development and bored of business applications (as mentioned in the interview now he is full time G-Stomper, ed), a synthesizer and groovebox fanatic, a mountain freak, a climber, 
and of-the-wall thinker and last but not least, an EDM lover.

What inspired you to start working on G-Stomper?

When I got my first Smartphone, a Nexus S, around 2 years ago, there was almost no music making apps on the market. Since I was (and still am) a passionate user of hardware grooveboxes, it was pretty clear that a step sequencer was the thing I wanted to build. The first few weeks it was just playing around a bit, but once the first sequencer was in alpha state, it made so much fun to create beats with it, that I decided to pack it into a full app.

How long time did it take you to finish the application from beginning to the first working version?

3 Months from the beginning to the release of V.1.0, and 2 years to the current state. Since April I've switched to full time, before it was beside a regular job.

Can you show us an image of an early prototype and what were the functions of the first version released?

There’s a YouTube clip, which was recorded from G-Stomper 1.0: http://www.youtube.com/watch?v=Z4N6g5N9C3E

Key features of the initial release 1.0:

9 Drum Kits

11 Tracks

3 chainable Effect Processors

17 Effect Types

Pattern Set with 16 Patterns

Parameter Automation

PCM WAV 16bit, 44.1kHz, Stereo export

PCM WAV 16bit, 44.1kHz, Mono or Stereo UserSamples import

(The core audio engine is almost unchanged until today)


What kind of programming language has been used for G-Stomper?

It’s all pure Java

For programming audio application for Android what would you recommend or what is your preferred way?

Forget everything you know about coding style, especially when you use Java. Since you have to develop for the very last bit of performance and memory, things are much different than in a non-mobile environment. An excellent article about this is 
‘The 10 principles of Assembly Java’ at http://blog.javia.org/assembly-java/

Read the code of existing audio applications, as more as better, there are plenty available on the web. For me, an eye opener was the blog ‘Mind the robot’, which was actually owned by Ivan, the developer of  Supreme MPA.

What would be the first step to programming Android applications?

Don't start with your main application, create something unimportant 
(but related in some way) first. 
I've created a simple ‘Simon’ game at the beginning to get familiar with the Android and audio basics … and to get the development environment up and running.

Also a good start is to take a look at the Android Developer Guides at http://developer.android.com/develop/index.html

Did you imagine that G-Stomper would grow to what it is today?

No, not at all. At the beginning it was all just for fun, and right before the release of G-Stomper 1.0 two years ago, I thought it was more or less complete. But one week before it went live, Rej from Singlecell released Caustic 1.0 and I saw its user interface, which was actually light-years away from the G-Stomper UI. Since then I've released 67 updates, and number 68 is already in progress;). If you’re interested in the release history you’ll find it at http://www.planet-h.com/gstomper/#releasenotes

What is your musical background?

I was never a full time musician. I played guitar a few years, sometimes in a band, sometimes as a singer as well, but I’m lucky that there are no recordings of it, lol. Since I was a pure blood programmer from the beginning, even if I didn't know then;), it was just a question of time to move to electronic music. I’ve started in the 90s with some software called ‘Hammerhead’, a typical step sequencer based drum machine. Since then really love to do live jams with drum machines and synthesizers, as more knobs and faders to fiddle around as better. This definitely inspired me a lot during the development of G-Stomper Beat Studio.

Can you share some of your music? 

I've uploaded some tracks I've created a few years ago, most of them created as jam sessions and then cut together in a daw.

https://soundcloud.com/pflaerm

Are there any other Android apps that you like and use?

Not really.. I'm still addicted to hardware;), on the move, I use almost only G-Stomper, sometimes RecForge for quick recordings.
RecForge is a great tool to grab samples in a good quality, when you're on the move.

Have you been thinking about creating any other applications?

I dream of a modular Synthesizer.

What software do you use outside of Android?

I use Wavelab from Steinberg for almost everything around sampling and mastering.

And what hardware do you use for music?

As you maybe already guessed, I'm addicted to the Korg Electribe boxes and any kind of Step Sequencer. I'm also using the Clavia Nord Lead and Nord Modular Series, Access Virus and analog stuff from Jomox.

Do you have any favorite tricks that you want to share regarding G-Stomper?

Although this is maybe the most annoying task for an experimental soul ... I really recommend to take a closer look to the PDF UserManual at

http://www.planet-h.com/gstomper/

It’s a very useful reference, which provides detailed descriptions for every single feature.

What do you think is the most important quality to have as a music creator in your opinion?

Having fun, I guess!

Apart of that, I have no Idea… maybe you would better ask me for the quality as a programmer ;)

Is there any musician/producer that uses G-Stomper that you want to promote?

Fugo CH was the very first G-Stomper user, long time before it got released. He helped me 
a lot with beta testing and improvements during the development. He also was the first guy who did a fantastic (public) live performance with G-Stomper 1.1 on his Nexus One and a Galaxy Tab 7.

https://soundcloud.com/fugoch

Also these guys are doing amazing stuff using G-Stomper

Karl Lost: https://soundcloud.com/user6242343

J-Fon: https://soundcloud.com/jersonfon

Dirty Morris D: https://soundcloud.com/dirty-morris-d

Any other musician/band/producer?

These guys are doing really excellent stuff, especially their live sessions are outstanding.

Evolent Zurich: https://soundcloud.com/evolent

And also: https://soundcloud.com/eisentanz

What is the next step regarding G-Stomper?

Even more control for live usage, more Sample Packs, and definitely better tutorials;)


Anything that you want to add?

I think, that’s it...:)

-------------------------------------------------------------------------------------------------

That's cool right!

I like that he gave a lot of directions for how to develop for Android 
and for new music to be heard!
Just go and support the man, we don't want to find him back in some dusty office 
coughing grey dust plus that we want that modular synth to be developed to..! 
And being easy to support by buying the excellent application (if you're device is up to it)
and for sure you will find use for it in your music making... 
as for many it is the only application they need.

Interviewed by Frank Malm

Playstore link:
G-Stomper Beat Studio
Homepage link:
http://www.planet-h.com/gstomper/

Nodebeat special:
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________________________________Make music with NodeBeat, the intuitive and fun visual music app for all ages. Whether you're 2 or 92, NodeBeat will make you sound like a pro. Create your own music in a matter of minutes or listen to NodeBeat generate its own. Easily record and share your creations with your friends.

★ Audio Features ★

- 20 Musical Scales
- All 12 Musical Keys Signatures
- 7 Octave Range
- Background Keyboard/Piano
- Audio Waveform Adjustment (Sine, Triangle, Sawtooth, Square)
- Creative Sound Sculpting (Echo, Attack, Decay, Release)

★ Rhythm Features ★

- Adjustable Tempo

★ Sharing/Exporting Features ★

- Record and email audio file
- Save/Load Creations

★ General Features ★

- Adjustable Node Physics (gravity, speed, proximity)
- Drum and Octave Generators
- Start/Stop Nodes by double tapping
- Sleep Timer for falling asleep to NodeBeat


-------------------------------

Created by Seth Sandler and Justin Windle. Ported to Android by Laurence Muller.

NodeBeat is available on Android, iPhone, iPod Touch, iPad, and Playbook.

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- On some devices running Android 2.2 or lower, the internal memory usage will be significantly more due to a bug fixed in Android 2.3 and above. We recommend updating to Android 2.3+ if possible to fix this issue.


Playstore link:
Nodebeat

Here is more information regarding the app:
http://createdigitalmusic.com/2013/05/touch-music-control-choices-touchosc-gives-android-iphone-5-proper-love/

This existed before as a free version but they have now upgraded it to have equal functions to the iOS app and now as the Beta testing is over it will cost some money but it seems worth it if you are looking for a controller as it is highly configurable...
Take a look at the Website for a full description.
For a couple of days it will be with a lower price.

Playstore description:

TouchOSC is a modular OSC and MIDI control surface for Android.
It supports sending and receiving Open Sound Control and MIDI messages over Wi-Fi.
The application allows to remote control and receive feedback from software and hardware that implement the OSC or MIDI protocols such as Apple Logic Pro/Express, Ableton Live, Renoise, Pure Data, Max/MSP/Jitter, Max for Live, OSCulator, VDMX, Resolume Avenue/Arena, Modul8, Plogue Bidule, NI Traktor, NI Reaktor, Quartz Composer, Supercollider, vvvv, Derivative TouchDesigner, Isadora and many others.

The interface provides a number of customizable touch controls to send and receive messages:

Faders / Rotary controls / Encoder controls / Push buttons / Toggle buttons / XY pads / Multi-faders / Multi-push / Multi-toggles / Multi-xy pads / LEDs / Labels / Time & battery displays

Additionally the program can send Accelerometer data. The application comes with example layouts and completely custom layouts can be constructed using the free TouchOSC Editor application.

Please navigate to http://hexler.net/touchosc-android for more information, video demonstrations and download the free layout editor application for OS X, Windows and Linux and the free TouchOSC Bridge utility to easily connect to any MIDI-capable application on your computer.


Playstore link:
TouchOSC
Homepage

Men and women babies and children- 
This time electronic dance music took the first prize. 
The artist goes under the name mniip and have a long career ahead of him being only sixteen and if you listen to the other music on his Soundcloud page it is highly impressive as some of the music in my opinion is better than the song he won with. 
Being more impressive is too already have this type of production skills and using only Caustic for it! 
(And no samples, just the synths and the Beatbox module).
There will be a longer interview with him soon so stay tuned...
Meanwhile you can download the Caustic file  at the bottom of this post and study how he made the song. For this you would need Caustic. If you want to check it out without buying the app there is a Demo version and there is a free fully functional version on the webpage for PC.


There was not so many contributions but they were all interesting and if you go under the banner contest music you can hear all the contributions and which application was used-
Some things that was interesting to me was-
The SunVox song called Suite Life is made by two brothers and is now remastered and released as part of an album 90% made with SunVox- there will be a review of it soon.
It was also nice that two Developers participated, hope that will continue into the third contest.
The song Unattractive Subtractive By Pan65 is worth to listen closely to, because it is made using the Beatbox module and the rest of the sounds are made using five Sub Synths and think that the vocal qualities that he coaxed out are nice and showcase some of the possibilities of  the Sub Synth module.
Finally one of my personal favorites was the SunVox song by Hardimagen, found the rhythm parts uninspired though. (No offense Hardimagen, it is as always a personal opinion).

So the next contest will start in about two weeks or so- 
So please fire up your applications and go to work!

Links:

mniip Soundcloud page
mniip Webpage
Caustic Webpage
Caustic on the Playstore

Caustic file:

Posted the first six videos some time ago and here is two more.
If you have not seen the other ones they are highly recommended and as I said in the first post that if you want to share some of your own Sound design ideas using your Android Device please send Musical Android a video and it will get posted.
Send link to video or if it is under 25mb directly to musicalandroid@yahoo.com

This looks to me like an excellent teaching tool for you when you begin to produce music and also to have for reference for certain tasks. Have not tried myself as the areas it covers are already part of or a big part of what I know but reading the reviews and what it is supposed to do it seems like a good substitute for a teacher and can save you many hours to months of learning.
It also comes in a free time limited version so if you don't know if it will help you...

Here is what the creator of the app posted on Playstore:

Producer Tools takes care of the tedious parts of making music, leaving you free to focus on being creative. Producer Tools is like your brainy studio assistant -- someone you can ask "Quick, what frequency is A sharp?," "How many milliseconds is a dotted 1/16th note at 135 b.p.m.?," or "What should I boost to make the kick drum bigger?"The app's functions include a delay calculator, a chord reference, an equalization guide, a frequency-to-note translator, and a harmonic mixing wheel. All of Producer Tools' features are optimized for working in digital audio workstations like Ableton Live, FL Studio, and Logic: all the notes in the chord reference are MIDI-friendly sharps, for example, and the delay calculator gives you both milliseconds and Hertz -- perfect for synchronizing LFOs.

Producer Tools is designed to help speed up the production process, whether you're an experienced electronic music producer or you're just starting out. Download it and boost your workflow to the next level.


Playstore link:
Producer Tools

Wrote about Binaura and their apps a couple of posts ago and there was no video for Flux, but here is one just a day or so old. 
Feel like this is like one of my mantras or something but can't help myself- 
So this video is not the greatest  and it is better if that you download this free app 
for yourself and try it out...

Playstore Link:
Flux

HUh- 
Have not seen that before- 
If you have a bluetooth keyboard for your computer you can use it to control Heat- 
Feel like getting one right now as that is cool cool cool.
Have no idea what a Bluetooth keyboard costs but for sure it is cheaper than most midi keyboards plus that you can use it for... da da da... writing of texts.

Update:

● New: Added support for class-compliant USB Midi Interfaces to be able to play Heat with a Midi keyboard
● New: Added support for Bluetooth keyboards (Octave 1: Z-M; Octave 2: Q-U; left/right cursors for octave shift)

Playstore Link:
Heat Synthesizer

Playstore Link:
PixiTracker

Had this for awhile and was always thinking that it is nice and being for free maybe the deepest multi track sequencer you can get for free. 
It looks ugly but it comes with some nice sample sets and a goooood synthesizer section that allows for a whole lot of different sound manipulations.
It is a slight learning curve but depending of your knowledge of music applications/software you will have picked up most of it in 15 minutes or so...
The one small, small annoyance is the melodic note input as it is you have to choose where in the timeline you want to introduce the note and then use a slider to determine semitones up or down but that is like said not much of a problem.
It is in some ways like the poor country cousin of Syntheogen as they have similarities but Syntheogen being definitively better looking and having more options. Of course they differ in sound too which one you prefer soundwise is of course personal.
Check it out you'd probably be surprised.

Posting two videos that a guy called Andre Brown made, the sound not being directly recorded makes it not representative of the application soundwise but...

Playstore info:
Sequencer is a beat creation app for your phone or tablet.
The free version of sequencer comes with:

- Variable length tracks supporting 16 to 128 steps
- 70 sample sound pack with two octaves of pitch
- 3 oscillator wavetable synthesizer with 12 waveforms
- 35 synthesizer presets
- 7 channel sound mixer with volume adjustment, mute, and solo
- Loop setting that lets you repeat blocks of your composition
- 30 to 180 BPM tempo
- Real-time equalizer visualization

Compatibility:
- Application requires screen resolution of at least 800x480. 
- For best results, please use a device with 1gHz or faster processor.

Notes: 
Single-tap the left or right side of a slider to change the value by one.
Tap oscillator name to turn three-waveform unison mode on and off.
Amplitude envelope can be changed by dragging on the graph.


Playstore link:
Sequencer

These three applications are made by a group calling themselves Binaura and one of the creative processes they dedicate time to is Android applications so far these three mentioned above and hopefully many more to come!
These ones are all in a Automatic Sound generator style and all three with beautiful graphical interfaces- simple, elegant black and white.
Maybe the deeper one in way of functions is SphereTones. 
After this SoundBow and the one with the least functions but the coolest one is Flux- 
Flux the dark ambient instant music maker that goes good visually with ingestion of herbal tea.
There is not much more to add to SphereTones and Soundbow doing what they do,
doing it sounding good.
Flux being original and sounding like no other application there is a desire inside of me that hopes that it will be developed to give a little bit more control as it could be immensely useful for ambient sound making.

If you are interested in what they do more outside of the Android project go to their website:
http://www.binaura.net/space/en.html

Here is two videos for one of their projects outside of Android- but remember that they are working on a lot of other projects.

And now here is the Playstore videos of SoundBow and SphereTones and a soundfile of Flux.
SphereTones have more to give soundwise than what you see in the video, I think it is around ten to twelve different sounds that you can use in different combinations.

Playstore links:
SoundBow
SphereTones
Flux

So the Nodebeat application had a PC version for free before but it was severely limited compared to the Android version- 
So if you were curious before and did not want to pay for the application or if your device was not strong enough you can use the PC version.
Posting the Playstore video here underneath but don't think that it does the application justice as it has much more to offer than gets pointed out in the video.
One thing I was entertaining myself with today was setting up a nice groove of just bass sounds and changing the scales and tonalities around which is really easy to do and in this way to hear the differences in feeling in between the different scales in a very direct way.

If you never played with nodebeat before you should give it a go as it is possible to use it to generate whole tracks with or just record it and pick parts for rhythm and/or melodic purposes as everything stays synchronized if you want, making it easy to incorporate in other musical settings.

Playstore link:
Nodebeat

Homepage with Pc version:
http://nodebeat.com/

These videos are slightly tedious being too long but they do point out and show you how to use Youtube for sample source material and how to download and convert the sound all inside your device. Also using the same samples inside Supreme MPA and work it into something. 
It is interesting to use Youtube as source material- Remember that I had to find some African chanting for documentary music that was being worked on and was listening through some sample cd's but could not find anything and it hit me- Youtube!
There is sooo much material and in this case it is almost impossible to get into copyright problems- 
In this example what got used was two bars of two teenage girls chanting being filmed by some tourist, so already there is a chance in a million that the same tourist would even hear the music ever plus that the voice got pitched down slightly and the teenage girls turned into women...

Playstore link:
Supreme MPA