my idea was that you choose one sound generation thing, let it be acoustic or electronic, and then try to manipulate its output to make some cool shit
if you use a sample based music tool, use one sample.
if you use a VST or instrument based tool, use only one generator and go with that one.
for voting: if the entry feels like it was made out of the very limited possibilities that only one [thing] can give, its fairgame.