Led Zeppelin's 'Rock and Roll' was born from a spontaneous Bonham drum intro at Headley Grange

John Bonham started playing the intro to Little Richard’s “Keep A-Knockin’” during a jam at Headley Grange and the band just fell in behind him. Jimmy Page said the song came together from the freedom of making music without knowing what was coming next — and you can hear that looseness in every bar.