Related Clues:

• Better song, usually
• 'I Am the Walrus,' for the Beatles' 'Hello, Goodbye'
• Queen's 'We Will Rock You,' to 'We Are the Champions'
• Back of a hit record
• First half of an LP
• Popular half of a 45, usually
• Musical flip
• The Beatles' 'P.S. I Love You,' e.g
• Singer's better half?
• 'I Want to Hold Your Hand' through 'All My Loving,' on 'Meet the Beatles!'
• Bachelor party - most singles had one
• Pop single's second song
• Single's less good song
• The Beach Boys' 'Surfer Girl' vis-à-vis 'Little Deuce Coupe'
• Less important part of a music single