Peter Dennis Blandford "Pete" Townshend is an English musician, singer-songwriter, and multi-instrumentalist, known principally as the guitarist and songwriter for the rock group The Who. His career with The Who spans 50 years, during which time the band grew to be considered one of the most influential bands of the 1960s and 1970s. Townshend is the primary songwriter for The Who, having written well over 100 songs for the band's 11 studio albums, including concept albums and the rock operas Tommy and Quadrophenia, plus popular rock and roll radio staples such as Who's Next, and dozens more that appeared as non-album singles, bonus tracks on reissues, and tracks on rarities compilations such as Odds & Sods. He has also written over 100 songs that have appeared on his solo albums, as well as radio jingles and television theme songs. Although known primarily as a guitarist, he also plays other instruments such as keyboards, banjo, accordion, harmonica, ukulele, mandolin, violin, synthesiser, bass guitar and drums, on his own solo albums, several Who albums, and as a guest contributor to a wide array of other artists' recordings. He is self-taught on all of the instruments he plays and has never had any formal training.