Picked this Bluray up ...just yesterday.
Liner notes Said , the Rooftop Performance is disc 3 ,......so I went straight TO DISC THREE !!!
Lot's of banter and mildly strange things going on in the studio in the beginning...and it's very much a family affair.
Then we finally get to the Rooftop

Music . Fwiw this is The Beatles Live Last Concert .
They Qued up the tapes downstairs in the Studio ,and the band began to play....
Five, or maybe six tunes got banged out before they were told to shut down due to noise complaints.
mostly from narrow minded people of course, but they interviewed various people (various ages) assembled out on the sidewalk and all but one ,we're positive .
I believe 3 of the performances became the final mix !... for the Let It Be album. And the sound in 5.0 (on 7.1DD) was nice and clean ,but tepid surround for 5.0.
I think it being Jan 29th !!....and a

Cold Wintery day ,...... those outside got something unique to warm up with.
and Now I have 2 other disc's to preview.
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