Klinger: By the late 1970s rock had become big business, and the emergence of the live album is a perfect example of the way that popular music had gone from being a cottage industry to being a regular industry. Nowadays, the live album is seen as a delightful little bonus for the fans and completists, but back in the satin-jacketed ’70s it provided an opportunity for bands to cross over into the mainstream. Peter Frampton had been something of a journeyman musician for about a decade before Frampton Comes Alive made him a heartthrob and radio staple. Kiss’s first few albums were largely ignored until Alive made them jukebox (and lunchbox) heroes. And of course Cheap Trick were more or less a quirky road band until they tapped into their rabid Japanese following and made the album At Budokan.