John Lennon

'Daytime Revolution' tells story of their week hosting 'The Mike Douglas Show' in 1972.

Former aide recalls living with Lennon after the Beatles split.

Line appears in "Here Today," written not long after former bandmate was murdered.

The show arrived in the midst of a tumultuous time for the former Beatle.

Prog band's longest-tenured member also played with George Harrison, Joe Cocker and Ginger Baker.

This breezy rocker highlighted a subtly evolving sound, becoming their seventh U.S. No. 1.

In the immediate aftermath of his death, major artists scrambled to address the horror in some fashion — musically, verbally or through the press.

The Fab Four never reunited, but they'd rebuilt their friendships by the time of his death.

The rocker dismissed the song almost immediately.

The onetime Beatle's widow isn't sure if she really wants to share details.