His father was the leading pianist with Jim Mac's Jazz Band in Liverpool. He had one younger brother. He got a scholarship to Liverpool Institute for Boys. At 14, his mother died of breast cancer.
In 1957, McCartney met John Lennon at a local church fête (festival). He joined Lennon's band called the Quarrymen and they eventually founded The Beatles.
Paul McCartney belongs to the rock genre because The Beatles are rock. Rock consists of sub genres of popular that has roots in the 1940's and 1950's. It originated in the U.K.
An American contemporary in the same musical genre as The Beatles are the Eagles.
This song is about not fighting the things that happen and just trusting that everything will work itself out.
During the time this song was written, The Beatles were going through a tough time almost to the point where they were going to split up. All the other members were off with their partners somewhere and McCartney was in London all alone, thinking of his mother.
This song belongs to the rock genre because The Beatles are considered to be a Enlgish rock band and because this song along with their other songs has electric guitar, drums and a repetive beat and rhythm, Although "Let It Be" is in the rock genre many argue that it also incorporates some blues and some R&B.