Here's what I would do if I were you. I'd get some music software (I use Noteworthy Composer) and a MIDI controller. Then you can tap into the great collection of free music in MIDI form which is available on the Internet.

With the music software, you can download the mIDI files and modify them if you wish to. You can write new parts, change the key, change clef, all kinds of things.

For example, listen to Danny Boy version 3 from this site:

Jacks MIDI site

That is an arrangement by Chet Atkins, just sitting there waiting for somebody to come along and enjoy it.