Shortly after the orchestral release, Deep Purple began a hectic touring and recording schedule that was to see little respite for the next three years. Their first studio album of this period, released in mid-1970, was "In Rock" (a name supported by the album's Mount Rushmore-inspired cover), which contained the then-concert staples "Speed King", "Into The Fire" and "Child in Time". The non-album single "Black Night", released around the same time, finally put Deep Purple into the UK Top Ten. The interplay between Blackmore's guitar and Lord's distorted organ, coupled with Gillan's powerful, wide-ranging vocals and the rhythm section of Glover and Paice, now started to take on a unique identity that separated the band from its earlier albums. Along with Zeppelin's "Led Zeppelin II" and Sabbath's "Paranoid", "In Rock" codified the budding heavy metal genre.