Henry Thomas and his Rockabillies
From the film Baby the Rain Must Fall (1965). Steve McQueen plays Henry Thomas, a recently paroled rockabilly singer who's awkwardly reunited with his wife and his young daughter he hasn't seen.
He sings at the local juke joint as Henry Thomas and his Rockabillies, hoping to hit the big time like Elvis. Real musician Glen Campbell plays one of his band members!