 It was written as a reaction to punk and to show that Led Zeppelin could compete with the new bands.It was planned to be released as a promotional single to the audience at the 1979 Knebworth Festival, headlined by Led Zeppelin, but this was cancelled at the last minute.It was first performed live at the 1990 Silver Clef Awards Festival at Knebworth in 1990 by Plant's band with Page guesting.