Jill Hart and Her Teen-Agers
All-female high school swing combo from the "Toby and His Band" story of comic book Punch and Judy Comics v2 #12 (August 1947).
Their manager is Toby Dewitt. The band demands Toby find them a male singer for an upcoming school dance. He finds out Jill's dad is secretly a "sweetorooney" crooner but only when he's in the tub. Hijinks ensue.