A battling musician realizes he's the one human being on the planet who will remember The Beatles soon after waking up within an alternate reality the place they never existed.
So there is leakage there. Then I stated I might do a string quartet. The musicians objected to twiddling with headphones, so I gave them Paul's voice and guitar on two speakers both side in their microphones. So you will find leakage site of Paul's guitar and voice about the string tracks.
Soon after recovering, he sings the Beatles tune "Yesterday" for his mates and discovers they have never heard about the Beatles.