perhaps best known for grunge, gangsta rap, R&B, teen pop; Eurodance, electronic dance music, the renewed popularity of punk rock from the band Green Day (which would also help create a new genre pop punk), and for the entrance of alternative rock into the mainstream. U2 was one of the most popular 1990s bands; their groundbreaking Zoo TV and PopMart tours were the top-selling tours of 1992 and 1997, respectively. Glam metal died out in the music mainstream by 1991. Grunge became popular in the early 1990s due to the success of Nirvana's Nevermind, Pearl Jam's Ten, Alice in Chain's Dirt, Soundgarden's Badmotorfinger and Stone Temple Pilot's Core. Pop punk also becomes popular with such artists as Green Day, Blink-182, Weezer, Social Distortion, The Offspring, Bad Religion, NOFX and Rancid. Other successful alternative acts included Red Hot Chili Peppers, R.E.M., Nickelback, Creed, Radiohead, Gin Blossoms, Soul Asylum, Third Eye Blind, Faith No More, The Smashing Pumpkins, Live, Everclear, Bush, Screaming Trees and Ween. Rappers Salt-n-Pepa continued to have hit songs until 1994. Dr. Dre's 1992 album The Chronic provided a template for modern gangsta rap, and gave rise to other emerging artists of the genre, including Snoop Dogg. Due to the success of Death Row Records and Tupac Shakur, West Coast gangsta rap commercially dominated hip hop during the early-to-mid 1990s, along with Bad Boy Records and the Notorious B.I.G. on the East Coast. Hip hop became the best-selling music genre by the mid-1990s. In the United Kingdom, the alternative rock Britpop genre emerged as part of the more general Cool Britannia culture, with Oasis, Blur, Pulp, Suede, Supergrass and Elastica serving as popular examples of this emergence. The impact of boy band pop sensation Take That lead to the formation of other boy bands in the UK and Ireland, such as East 17 and Boyzone. Female pop icons Spice Girls took the world by storm, becoming the most commercially successful British group since the Beatles, the Rolling Stones and Led Zeppelin. Also, R&B artists Des'Ree, Mark Morrison and Sade became quite popular during this decade. Their global success brought about a widespread scene of teen pop acts around the world such as All Saints, Backstreet Boys, Hanson, NSYNC, Britney Spears and Christina Aguilera who came to prominence into the new millennium. 1991 also saw the death of Queen frontman Freddie Mercury from AIDS-related pneumonia. Many musicians from Canada, such