Everybody in the bar had to drop a quarter in the jukebox or be shamed by "Momo" Villarreal. It wasn't about the money, Mary Ann Villarreal's grandmother insisted. It was about the music--more songs for all the patrons of the Pecan Lounge in Tivoli, Texas. But for Mary Ann, whose schoolbooks those quarters bought, the money didn't hurt.

When as an adult Villarreal began to wonder how the few recordings of women singers made their way into that jukebox, questions about the money seemed inseparable from those about the music. In Listening to Rosita, Villarreal seeks...