Hi, I'm writing a software synth/sequencer called Advanced Gtk+
Sequencer. It won't take much time till first pre-release 0.4.0 I got
basic functions working. Now I'm pleased to ask if someone wants to
contribute. Note pulseaudio interferes with Advanced Gtk+ Sequencer to
achieve best results I even recommend WindowMaker as desktop or any
minimal window manager of your choice.
http://sourceforge.net/projects/ags/
If your asking yourself how to use Advanced Gtk+ Sequencer please take a
look at a screencast I just made this morning on Google+
The project features a wiki with some programming howtos and explanation
of internals.
bye
Joël