像历史上所有深入人心的乐团一样，威豹的命运始终多舛。1977年贝斯手Rick Savage、吉他手Pete Willis和Steve Clark、主唱Joe Elliot、鼓手Tony Kenning组成威豹（Def Leppard是从deaf leopard发想而来）。但直到80年鼓手Rick Allen的加入，乐队班底才算底定，首张专辑“On Through The Night” 就此问世，制作人是“圣徒犹大”（JUDAS PRIEST）的汤姆·阿洛姆（Tom Allom），他准确地抓住了乐队的青春气息。这张专辑在英美都进入了各自的排行榜，初步奠定了DEF LEPPARD在重金属界的地位。 by Steve Huey On Through the Night, Def Leppard's debut album, established the band as one of the leading lights of the New Wave of British Heavy Metal. While possessing the tight, controlled attack of comrades Judas Priest and Iron Maiden, Def Leppard was uninterested in the fantastic, menacing, and sometimes gothic themes of those bands; instead, On Through the Night is a collection of working-class hard rock anthems informed by the big, glittering hooks of glam rock. It may lack the detailed production and more pop-oriented songwriting of later efforts, but it's also arguably their heaviest album, and some Leppard fans prefer this sound.