Beatles最为人所知的一套bootlegs. 

Unsurpassed Masters is the most recognized series of Beatles bootlegs ever. 

This is the fourth volume of the 7. 

Focuses on recordings from 1968, encompassing demos, outtakes, and unreleased versions and entire songs recorded during the White Album sessions as well as versions of several successful singles. 

Bass, Piano, Guitar, Vocals - Paul McCartney (tracks: 1 to 17) 

Drums - Ringo Starr (tracks: 1 to 17) 

Engineer - Geoff Emerick 

Guitar, Piano, Vocals - John Lennon 

Guitar, Vocals - George Harrison 

Harpsichord - John Lennon (tracks: 17) 

Lead Vocals - Ringo Starr (tracks: 11, 13) 

Producer - George Martin