"What's The New Mary Jane" overdubs

On November 26 1969, a session at EMI Studio 2 was booked by John and Yoko for some work on a proposed single containing two unreleased (at the time) Beatles' tunes. This was to be credited as the "Plastic Ono Band" for whatever reason.
The A-side of the single was to be "You Know My Name (Look Up The Number)" and the B-side of the single was to be "What's The New Mary Jane" - which was recorded during the "White Album" LP sessions back in 1968. The idea was to add some vocals and noises to the already busy "What's the New Many Jane" including John and Yoko and various staff from the studio. This particular song was remixed from the original tape and overdubs were added including the addition vocals and some percussion. The entire exercise took up over 6 minutes. There was also an edited version of the "song" with the overdubs done during this session which took the song about 2 and a half minutes.
Eventually, the A-side of this single ended up on the B-side of "Let It Be" and credited to The Beatles whereby "What's The New Mary Jane" would remain unreleased at this point.
This session with it's overdub can be heard on a 12 inch vinyl single released in 1980 entitled "What A Shame Mary Jane Had A Pain At the Party" with an interesting cover.