I’m trying to think where this came from. I think it was the cover of a Beatles fake book – I liked the style and wanted to copy it…
from Wikipedia: A fake book is a collection of musical lead sheets intended to help a performer quickly learn new songs. Each song in a fake book contains the melody line, basic chords, and lyrics – the minimal information needed by a musician to make an impromptu arrangement of a song, or “fake it.”
…good doodle, though.