I know that this
COMPLETELY possible. you would probably want the variable events, and some other addons for this but that would be optional.
its more or less going to be a build that will use onprojectilehit ALOT. also you would need a special weapon (with a good speed to it) to hit the targets.
its also would be using ALOT of relays/delays and you would need to spend alot of time synching everything to whatever music your using.
to put it simple...this is easier than the stargate build.