The Def Leppard E.P. is the debut EP by British rock band Def Leppard. The EP was recorded at Fairview Studios in Hull, in November 1978 and produced by Def Leppard. The EP's cover is a parody of the painting His Master's Voice, with a leopard in place of the painting's dog, Nipper. The record was first released in RED with the code SRT CUS 232 on the Bludgeon-Riffola label.One hundred copies included lyric sheet inserts that vocalist Joe Elliott had photocopied during his lunch-break at work.