Relatives of Cilla Black recently discovered a long lost demo of 1964's "It's for You," a song the Beatles gave to Black.

The disc was found inside a brown envelope with the title of the song and Black's name.

Her relatives thought that they had found a copy of her single and brought it along with other recovered items to be appraised at Liverpool's Beatles Shop.

That's when longtime manager Stephen Bailey discovered what they had actually found.

"We got to the last one, and as soon as I heard it, I thought, 'Oh God, that's not Cilla Black.

It's Paul McCartney," "I was shaking with excitement and speechless.

I realized that this was the long lost Beatles demo disc from 1964, and I was probably one of the few people to have seen and heard it in over 50 years."