I'm going to be working on a research project with my school's IEEE chapter.  We're going to be connecting an accelerometer to a glove and an Arduino, the Arduino will pass accelerometer measurements to a computer running Pure Data (the free, open-source equivalent of Max), and Pure Data will then perform musical commands in response.  For instance, a bongo beat motion with your hand will generate a drum strike sound, its volume dependent on the strength of the air slap.

2. Gorf sequencer: another open-source AVR-based music device developed by a fellow named Paul living in the UK.  He's done some great work, but looking at his PCBs, I noticed they use parts that are a little tricky to find here in the States.  Redo the boards with a few modifications for easier-to-obtain parts and a more readily available case (his uses a custom laser-cut polycarb enclosure) and a few more North Americans can see this puppy in action.  Problem is I really don't feel like doing another "improve on someone else's idea" project.  It feels too much like cheating.

And if i am reading correctly from his site...
it's protected under the GPLv3
http://www.gnu.org/licenses/quick-guide-gplv3.html

You can get the acrylic cases from Chris via emailing him (PM me for his address). He cuts to order. Really nice guy!

The only thing i can see what would be a little tricky to get would be the pushbuttons. but i think even those might be obtainable via Mouser/Digikey. i haven't looked up the manufacturer.

The 1 thing i would change on his design is the PSU circuit and connector. Other then that it's a great little sequencer! Paul did a great job.
I dont see much more reason to modify this. everything is on his website for users to build them DIY style.

SO perhaps moving on to a different project is in order. Let us chat in private on some ideas.. perhaps we can do some joint efforts.

(ok a bit selfish but I get enough people asking me so it's definitely a wanted item....)

I don't know if you'd be interested in this sort of thing, but I know there is a lot of interest around MIDI solutions for LGPT on the Dingoo and PSP handhelds.

+8

This link might help somehow:
http://www.vorc.org/text/column/hally/ymxxxx.html

EDIT: or I could try writing music again.  Maybe start with a cover of Fleetwood Mac's "Peacekeeper" or James Taylor's "Your Smiling Face".

Also, I've got a standalone version that I haven't posted about, which is pretty much equivalent to my SEGA Master System interface without the SEGA console itself.