Ultimate Classic Rock

The band add yet another unexpected song to their marathon live shows.

It was 1959, and the future Rock & Roll Hall of Famer was just 13 years old.

UCR is pleased to premiere the track, which comes from Nuclear Messiah, the all-star project featuring former Megadeth guitarist Chris Poland.

Marijuana and rock music have a long history together.

They performed a special cover for the Eagles rocker, who was sitting in the crowd.

The synth legend also tells UCR about working with Jerry Garcia and Bob Weir.

It's reportedly due to "unforeseen medical circumstances affecting the band members."

It will appear on McCartney's upcoming album 'The Boys of Dungeon Lane.'

He also reportedly covered Billy Joel's 'New York State of Mind.'

Legendary photographer Henry Diltz and former bandmates look back at the singer-songwriter's long career.