i know of a few, but what kind of input device are you going to use? midi controller or what?
guitar pro 4 (mainly for guitarists, but allows you to add stuff in manually just usin normal notation)
cakewalk (not sure which one, but thats a program that allows you what you want)
evolution sound studio 2
then thers the more 'professional' pricey stuff... Propellerhead REASON, Steinberg CUBASE, FL studio 5, and pro tools