There is a man who claims to have travelled to an alternate dimension in which The Beatles never broke up and brought back a mix tape of Beatles songs no one in this dimension has ever heard.
Song stuck in your head but can’t think of the name? There's a website called midomi.com that allows you to sing or hum a song into your computer or phone and it will find the actual song.
Music has the ability to repair brain damage and return lost memories.
Paul McCartney dreamed the melody of "Yesterday" one night and immediately wrote the music the next morning. He then looked around for a month to make sure that he didn't subconsciously plagiarize it from somebody else.
Keith Richards heard the riff to "(I Can't Get No) Satisfaction" in a dream. He woke up, played the riff on a tape recorder and mumbled "I can't get no satisfaction" and went back to sleep.