Cobain was disenchanted after early touring, due to the band's inability to draw substantial crowds and the difficulty of sustaining themselves. During their first few years playing together, Novoselic and Cobain were hosts to a rotating list of drummers. Eventually, the band settled on Chad Channing, with whom Nirvana recorded the album "Bleach", released on Sub Pop Records in 1989. Cobain, however, became dissatisfied with Channing's style and subsequently fired him which made the band in need of a new drummer. They eventually hired Dave Grohl who helped the band record their 1991 major-label debut, "Nevermind". With "Nevermind"s lead single, "Smells Like Teen Spirit," Nirvana quickly entered the mainstream, popularizing a subgenre of alternative rock called "grunge". Since their debut, Nirvana has sold over 25 million albums in the United States alone, and over 80 million worldwide. The success of "Nevermind" provided numerous Seattle bands, such as Alice in Chains, Pearl Jam, and Soundgarden, access to wider audiences. As a result, alternative rock became a dominant genre on radio and music television in the U.S. during the first half of the 1990s. Nirvana was considered the "flagship band of Generation X," and Cobain found himself reluctantly anointed by the media as the generation's "spokesman.", though Cobain resented this, as he believed his message and artistic vision had been misinterpreted by the public.