Paul McCartney, Ringo Starr perform together in support of transcendental meditation

NEW YORK The Beatles loom so large in the history of rock 'n' roll, and the world, that watching one of the ex-Beatles perform is a strange, almost surreal experience.

Few have had that opportunity. But about 6,000 people at Radio City Music Hall got to do just that on Saturday, as Ringo Starr joined Paul McCartney for three songs at the "Paul McCartney and Friends: Change Begins Within" benefit concert.

"Ladies and gentlemen ... Billy Shears," said McCartney, 66, introducing Starr, 68, for the song "With a Little Help From My Friends," which Starr sings as a character of that name.