The ReBirth RB-338 was a great softsynth in its day, and it should run on an N900 easily, I would think. Of course I don't know anything about its portability to a linux platform. But it is freely available nowadays, here

http://www.rebirthmuseum.com/

Would it be possible to get this fine piece of software ported to our beloved N900?

(I am aware of the Sunvox softsynth, but I find it extremely complicated, especially with its lack of a standard midi interface. Rebirth is much more direct in comparison. Unless anyone can make a similar suggestion for this type of softsynth for the N900? I'd love to see more variety of softsynths on it in general, to be honest!)

Thanks much!

Ed. I failed to mention, it has been ported to the iPhone/iPad already. Please don't tell me to get an iPad though, I'm just making a point that it has been done!
http://rebirthapp.com/