ABBA should have been the squarest thing in the seventies pop universe: four toothpaste ads from Sweden singing gleamingly cheerful or earnestly distraught songs tailored for the top ten. Yet even the coolest of the cool wouldn't deny the quality of Benny Anderson and Björn Ulvaeus's songs and production or the flawless and emotive harmonies of Agnetha Fältskog and Anni-Frid Lyngstad. Elvis and the Attractions couldn't stop listening to them on the tour bus and consciously paid tribute to their style on songs such as "Oliver's Army". Pete Townshend praised their songcraft. A decade later, Nirvana not only made ABBA their own tour bus soundtrack, but also actually took an ABBA cover band on tour with them. Starstruck fandom or smirking irony? It was the nineties, so who could tell the difference?