Is pop music serious? AI has helped The Beatles regroup one last time. Critics hail the "powerful" reunion of Lennon and McCartney on Now and Then. But does the music matter?
The cheerful moptops that changed our culture
Fab four: The Beatles are the most successful act in the history of the US Billboard charts. Glossary
Commercial - Run or maintained to make a profit.
Soviet Union - Officially the Union of Soviet Socialist Republics (USSR). A powerful group of communist republics, the biggest being Russia, that existed from 1922 to 1991.
Utopian - Impossibly perfect. The term comes from an ancient Greek phrase meaning "no-place" invented by Henry VIII's chancellor, Sir Thomas More, in 1516, as the name of an imaginary, ideal island.
Trivial - Silly or unimportant.
Glib - Spoken confidently but in an insincere or unserious way.