MultitrackStudio for Mac Lite 9.4.2
ultitrackStudio lets you record your own songs. You can record instrumental or vocal tracks while playing along with previously recorded tracks. You can mix the tracks, add audio effects, edit mistakes and finally mix the song to a single audio file.
In addition you can use a MIDI keyboard to play instruments you don't own or can't play.
MultitrackStudio is straightforward to use. The free Lite edition is limited to three tracks.