I don't longarm but do work at my Bernina listening to CDs (10 of them) that my son has made for me over the years containing songs/singers I love.
A real mixed bag: old country (no new stuff - too cleaned up) like Haggard, Willie, Waylon, Allison Kraus; some Edith Piaf, Garland; lots of old rock and Motown: Dylan, Clapton, Smokey, Gaye, Elvis, Ronnie Milsap
Old folk: Weavers, Baez, Dylan, Peter Paul and Mary.
Some Christmas hymns, some blues and jazz
That's about 3 CDs worth
When not in a music mood I have the tv on to baseball if there's a game on or political talking heads