basically, throw out four ridiculous pieces of music trivia. hidden inside will be a truth, and it's up to everyone else to figure it out. try and cloak it well, obviously. no cheating as well.
A: The banjo player from Mumford & Sons used to be a metalhead as a kid and was known as 'mullet man' to his mates
B: 'Yesterday' by The Beatles had a working title of 'Rotten Eggs'
C: Britt Daniel from Spoon is two years older than he says he is
D: Creedence Clearwater Revival came close to changing their name in the early days because the abbreviation CCR also means California Code of Regulations, which the band wanted to distance themselves from