Without George Martin’s maverick streak, the Beatles may have never become one of the most influential bands in modern music.

The lesser-known friends, family and musicians who influenced the Beatles finally receive their due in David Bedford’s ‘Fab One Hundred and Four.’

The Beatles’ “Lovely Rita” provides a moment of levity to ‘Sgt. Pepper,’ distinguishing itself from other tracks through its raunchy subject matter and clunkier sound.

Elvis Costello performs in front of an ebullient hometown crowd, reinterpreting favorites and dusting off more obscure album tracks.

“I Don’t Want to Spoil the Party” reveals the Beatles’ country and rockabilly roots, even as it foreshadows – like much of ‘Beatles for Sale’ – the musical changes to come.

Tellingly, Paul McCartney still occasionally performs the Beatles’ “I’ll Follow the Sun” in concert. It’s an important stepping stone in his artistic development.

Rather than repeating the Eagles country-rock sound, Glenn Frey’s solo career reverted to his Detroit roots, blending rock, pop and soul.

Find out why George Harrison had to be convinced to sing “The Inner Light,” an unlikely b-side to the Beatles’ more commercial “Lady Madonna.”

Howard Smith’s ‘Lost Interviews with Rock Stars & Icons’ lends new perspectives on historical figures we thought we knew well.

We break format in the Deep Beatles series to discuss a George Harrison message that couldn’t be more appropriate for the season, or this time in history.