Hi Pitbone:

For my purposes, the PSR-2000 is a great keyboard for songwriters. Used units can be acquired reasonably as compared to the newer Yammies like the Tyros or 3000. If money is no object, either of these excellent boards are great. I have not experienced a software program that is easier than "hands-on" playing when you are trying to compose. I am a songwriter and I would absolutely be lost without my 2000. Cakewalk is a well known Softare Package for doing what you ask but I think the learning process may be a bit steep. Good luck and welcome to the zone.

Rice (The Lone Arranger)