Deep Purple are an English rock band formed in 1968.
The band is considered to be among the pioneers of modern hard rock, although their musical approach changed over the years. Deep Purple was originally formed as a psychedelic and progressive rock band.
Deep Purple shifted to a heavier sound in 1970. The band, together with Led Zeppelin and Black Sabbath, have been referred to as the "unholy trinity of British hard rock and heavy metal in the early to mid-seventies".
They were listed in the 1975 Guinness Book of World Records as "the globe's loudest band" for a 1972 concert at London's Rainbow Theatre, and have sold over 100 million copies of their albums worldwide.
