50s-music is part of the GeoCities MIDI files packaged by ArchiveTeam, I have converted the file to a separate MP3 so you can preview it, additionally, you can download the MIDI file itself, or the MP3 File.

Note: While this is free, some MIDI files are copyrighted songs, so use at your own risk

am_50s.mid (Dual) Melody Piano new melody piano Bass E. Piano Drums Kick Snare Ride Melody Piano new melody piano Bass E. Piano Drums Kick Snare Ride