About Deep Purple:
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.
About Judas Priest:
Judas Priest are an English heavy metal band formed in West Bromwich in 1969. The band have sold over 50 million copies of their albums to date. They are frequently ranked as one of the greatest metal bands of all time.