The Pretenders

"Guns N' Roses tribute band called Paradise City imitates that late-80's pop-metal band as precisely as possible in every show it plays; Chuck Klosterman article notes that tribute bands are arguably most universally maligned sector of rock 'n' roll; says most of them are mired in obscurity; notes being consciously derivative is not simple; says each member must not only look and act like the original, he must play like that person; describes typical Paradise City performance; photos (L)"