'Perfect Day' is Lou Reed's most enduring song, and came to fruition with the help of David Bowie.

'Perfect Day' by Lou Reed: the making of rock's most earnest and enduring ballad

The Who - My Generation

'My Generation' by The Who: The making of the ageless anthem for rebellious youth

Sonny & Cher in 1966

'I Got You Babe' by Sonny & Cher: The making of the classic '60s flower power pop duet

Simon & Garfunkel in 1983

'Bridge Over Troubled Water' by Simon & Garfunkel: The making of the ultimate folk power ballad

David Bowie - Space Oddity

'Space Oddity' by David Bowie: The making of the spaceage pop breakthrough

David Bowie

Elton John - Saturday Night's Alright For Fighting

'Saturday Night's Alright For Fighting' by Elton John: The making of the rock 'n' roll glam classic

Elton John

Sparks - This Town Ain't Big Enough For The Both Of Us

This Town Ain't Big Enough For Both of Us by Sparks: The making of the Mael brothers' quirky hit

Blondie - Heart of Glass

'Heart of Glass' by Blondie: The making of the genre-defying new wave disco smash

The Beatles - Eleanor Rigby

'Eleanor Rigby' by The Beatles: The making of the dark pop classic

The Beatles

Pink Floyd - Another Brick in the Wall Part 2

'Another Brick in the Wall' by Pink Floyd: The making of the protest song and unlikely hit single

Don McLean - American Pie

'American Pie' by Don McLean: The making of The Day The Music Died epic

Elton John - Rocket Man

'Rocket Man' by Elton John: The making of the stellar space ballad

Elton John

Bob Marley - Live 1975

'No Woman No Cry' by Bob Marley: The making of the reggae crossover smash hit

Bob Marley

Free - All Right Now

'All Right Now' by Free: The making of the classic rock anthem

Mama Cass - Make Your Own Kind of Music

'Make Your Own Kind of Music' by Mama Cass: The making of the '60s hit turned Tiktok meme

Zager and Evans - In the Year 2525

'In The Year 2525' by Zager and Evans: The making of the chart-topping sci-fi masterpiece

The Beach Boys - God Only Knows

'God Only Knows' by The Beach Boys: The making of the heartbreaking love song

The Beach Boys

The Beatles - All You Need Is Love

'All You Need Is Love' by The Beatles: The making of the era-defining Summer of Love anthem

The Beatles