In 1968, guitarist Jimmy Page was in search of a lead singer for his new band and met Plant after being turned down by his first choice, Terry Reid, who referred him to a show at a teacher training college in Birmingham (where Plant was singing in a band named Obs-Tweedle).
Plant has commented that it is unfair for people to think of Zeppelin as heavy metal, as almost a third of their music was acoustic.
In 1975, Plant and his wife Maureen (now divorced) were seriously injured in a car crash in Rhodes, Greece.
Karac's death later inspired him to write several songs in tribute: "All My Love" featured on Led Zeppelin's final studio album, 1979's In Through the Out Door and "Blue Train" featured on Page and Plant's second and final (studio) album, 1998's Walking into Clarksdale.
The most important thing about Led Zeppelin II is that up to that point I'd contributed lyrics.
He left King Edward VI Grammar School for Boys in Stourbridge in his mid-teens and developed a strong passion for the blues, mainly through his admiration for Willie Dixon, Robert Johnson and early rendition of songs in this genre.