20 Unsolved Music Mysteries from the Golden Age of Rock

During their tense Get Back sessions, the Beatles let the reel-to-reel tapes run constantly. Hundreds of hours of audio were captured, preserving every argument, joke, and musical breakthrough. For decades, huge portions of that tape went missing. Informal jams, unreleased cover songs, and candid band arguments were either lost, stolen, or simply left uncatalogued in a vault. While much has been recovered, some of the most intimate moments of the world’s biggest band are likely gone forever.