My very first job was singing blues & Joni Mitchell songs at a little snack bar kind of thing, attached to Arnold Hall, at Lackland AFB. About once a month, they sent me a contract & a few weeks after the gig, they sent me a check for $30. I was 16 & continued until I was a senior in high school.
LOL...I did that too, but out on Boston Common.
Sang Joni Mitchell songs “For Free”.