"'Let It Be' sounds like a hymn, and because it says 'mother Mary,' people assume it's a religious song, but it isn't," explains Beatles historian Mark Lewisohn. "'Mother Mary' is Paul's mother Mary - his mother was Mary McCartney - and Paul was 26 when he wrote this. He was 14 when his mother died, so only 12 years earlier that she had died..... [In the song] he's in trouble, he's having a troubled moment, and his mother comes to him and says, 'Don't worry, son, everything will be all right. The answer will come. Let it be, let the answer be.'"

Due November 17 (Nov 18 in North America), "The Art Of McCartney" features a variety of artists joining the former Beatle's long time band to perform songs from the bassist's legendary songwriting catalog.