[PAR] [TLE] Deep Purple [SEP] Deep Purple are an English rock band formed in Hertford in 1968.  The band is considered to be among the pioneers of heavy metal and modern hard rock, although their musical approach changed over the years.  Originally formed as a progressive rock band, the band shifted to a heavier sound in 1970.  Deep Purple, 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 albums worldwide. [PAR] [TLE] Neoclassical metal [SEP] Neoclassical metal is a subgenre of heavy metal that is heavily influenced by classical music and usually features very technical playing, consisting of elements borrowed from both classical and speed metal music.  Deep Purple's Ritchie Blackmore pioneered the subgenre by merging classical melodies and blues rock.  Later, Yngwie Malmsteen became one of the most notable musicians in the subgenre, and contributed greatly to the development of the style in the 1980s.  Other notable players in the genre are Randy Rhoads, Jason Becker, Tony MacAlpine, Vinnie Moore, Uli Jon Roth, Stéphan Forté and Timo Tolkki.
[PAR] [TLE] Deep Purple [ SEP ] Deep Purple are an English rock band formed in Hertford in 1968 . The band is considered to be among the pioneers of heavy metal and modern hard rock , although their musical approach changed over the years . Originally formed as a progressive rock band , the band shifted to a heavier sound in 1970 . Deep Purple , 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 albums worldwide . [PAR] [TLE] Neoclassical metal [ SEP ] Neoclassical metal is a subgenre of heavy metal that is heavily influenced by classical music and usually features very technical playing , consisting of elements borrowed from both classical and speed metal music . Deep Purple 's Ritchie Blackmore pioneered the subgenre by merging classical melodies and blues rock . Later , Yngwie Malmsteen became one of the most notable musicians in the subgenre , and contributed greatly to the development of the style in the 1980s . Other notable players in the genre are Randy Rhoads , Jason Becker , Tony MacAlpine , Vinnie Moore , Uli Jon Roth , Stéphan Forté and Timo Tolkki .
Subgenre of heavy metal, Neoclassical metal, was pioneered by an English rock band formed in Hertford in what year?
Subgenre of heavy metal , Neoclassical metal , was pioneered by an English rock band formed in Hertford in what year ?
1968
1968