If you don't have much recording I would advocate Audacity - it useful anyway for editing and tweaking. If you have an app for playing ABC already.

If you have a smart phone you have an audio recorder which is useful for grabbing a tune at a session or club. Edit in Audacity.

I use it for converting cassette tapes to CD. Basically start recording, play the music, and top and tail, or remove glitches.

It does need Lamenc.dll for MP3 export.