The album 'Let It Be' (which was performed at the famous rooftop concert) came to be precisely because of McCartney's insistence that they for once create an al

The album 'Let It Be' (which was performed at the famous rooftop concert) came to be precisely because of McCartney's insistence that they for once create an album without any double-tracking, fancy technology, etc. and perform it live in a televised setting (as opposed to live in a concert setting -- which they were still unwilling to do).