He bought the famous instrument way back in 1961 and it was used to compose many famous Beatle songs. So when it disappeared without explanation in the 1970s, it was a real blow to Paul McCartney.

How it came back into his possession 51 years later and where it's been all these years will be traced in a new documentary called "The Beatle And The Bass."

No word on a debut date for the flick, which is just going into production.

Paul McCartney’s Stolen Bass Guitar Saga to Be Told in New Documentary From ‘Super/Man’ Producers