Hi everyone.

This thread is of very high interest to me, I'm looking for a viable portable music box ever since... Well it's been a long time. I tried a lot of software and I'm going to lay just what I know so far :
.

• Sunvox (SDL-based, runs on WinMo, PalmOS, iPhone and counting)
  Sunvox is a tracker, a form of sequencer where notes are entered as numerical values along a vertical multitrack time-line
  
  Pros
  -It's *rock* solid, I don't remember hanging it even with a lot of instruments.
  -It has *soft synths* you can produce sound not only by using samples, but using soft synths, and this, gentlemen, is a deal maker.
  Cons
  -No recording
  -It's a tracker
  http://www.warmplace.ru/soft/sunvox/
  .
• Bhajis loops (PalmOS)
  Bhajis has been painstakingly developped by Olivier Gillet and everyone thinking about a music sequencer on a mobile platform should have seen this :
  http://www.chocopoolp.com/bj_quicktour.php
  
  Pros
  -Same as Sunvox, it *runs* ; I torture-tested it and it never failed me
  Cons
  -No soft-synths, only samples
  -The record function is not synced to the beat (this is a HW limitation I guess)
  http://www.chocopoolp.com/
  .
• Reloop (Android)
  I did'nt use it a lot, just made a few loops just to check it out
  
  Pros
  -It exists
  Cons
  -The interface is clumsy, a lot of waisted space, I guess it's still WIP
  -No soft synths, just samples
  -No recording
  http://nikotwenty.com/
  

What do I want ? (I gonna go ahead and assume we ALL want it)

• A sequencer with unlimited (read : limited by the HW-RAM, CPU, etc) tracks that can be audio tracks (samples) and/or MIDI tracks that can trigger synths, typically for loooong padding notes that span over several patterns
• Automation (a timeline along the track that can automate parameters, typically volume and stereo panning, but effects parameters as well) - before you scream "overkill", check Bhajis loops, its automation implementation is state of the art
• A record function, sync'd to the beat (with a fall back to a simple "click" metronome when the HW ressources are too low)
• A simple interface, no fancy buttons and shades, something ergonomically optimized

On the desktop, I'm happily using Ardour (that has all the bells and whistles of a real powerful DAW) and QTractor (that only lacks Automation) but they use jack and well... Should we ? And I like ableton Live a lot.

And while we're at "what we want" : I'd really like something modular, using existing devs like LADSPA plugins & synth (fluidsynth, freeverb, etc) in a QT app (Qtractor could really be a good base I guess) and with a streamlined "ableton-like" interface (Bhajis wrote the book about it, we should take of lot of pages from it) but it kind conflicts with the "monolithic" approach that rule-and-work in phone apps..?

What can I do to help make it happen ?
-Interface design
-Beta-testing
-Maintain web ressources
-Everything that I have the capacities and the time to do.

Thank you for baring w/ my bad English

more URLs :

http://qtractor.sourceforge.net/
http://www.ladspa.org/
http://www.ardour.org/
http://jackaudio.org/applications
http://www.ableton.com/