A having difficulties musician realizes he is the only real person on the planet who can recall The Beatles after waking up in an alternate actuality the place they under no circumstances existed.
So you can find leakage there. Then I claimed I would do a string quartet. The musicians objected to fiddling with headphones, so I gave them Paul's voice and guitar on two speakers both aspect of their microphones. So there is leakage of Paul's guitar and voice on the string tracks.
After recovering, he sings the Beatles music "Yesterday" for his close here friends and discovers that they haven't heard of the Beatles.