the major problem with the film let it be be the director who quite clearly shot far more footage and sound than he could ever hope to wade through ( check out the 30 day bootleg to hear over 16 cd worth of sound record make by the film crew ) so when it time to match performance with film and well he couldn not do it . for proof of this checkout suzy parker and at no point in the film do you see lennon sing this song because hogg either have no footage or cant find the footage so another song performance of john be drop in to substitute . a a musician i note many instance where what you be watch ( such a billy prestons solo on long and widing road or george on let it be ) have zero bearing to what i be actually hear . there be a book you can buy that chronicle the exact ( tlls of film that be use and which be patch into the film ( title get back the unauthorized chronicle of the beatles let it be disaster ) . the film be a good look at the beatles second to last studio session but a a documentary go there be so much tampering with what you see ( it very badly synched up even when the performance do match the visual ) that it lose mark in my opinion .