premise: Guns N' Roses is a hard rock band.
hypothesis: Guns N ' Roses , often abbreviated as GnR , is an American hard rock band from Los Angeles formed in 1985 . Slash (musician) . He is best known as the lead guitarist of the American rock band Guns N ' Roses , with whom he achieved worldwide success in the late 1980s and early 1990s . During his later years with Guns N ' Roses , Slash formed the side project Slash 's Snakepit . After leaving Guns N ' Roses in 1996 , he co-founded the supergroup Velvet Revolver , which re-established him as a mainstream performer in the mid to late 2000s . Steven Adler . He is best known as the former drummer and co-songwriter of the hard rock band Guns N ' Roses , with whom he achieved worldwide success in the late 1980s .