Deep Purple in Rock

Deep Purple in Rock is the fourth studio album by English rock band Deep Purple, released on 5 June 1970. It was the first studio album recorded by the Mark II line-up of Ritchie Blackmore, Ian Gillan, Roger Glover, Jon Lord and Ian Paice.

In Rock was the band's breakthrough album in Europe and peaked at No. 4 in the UK, remaining in the charts for over a year. By contrast, it underperformed in the United States, where the band's Mark I albums had been more successful. An accompanying single, "Black Night," reached No. 2 in the UK, becoming their highest-charting single there. The album has continued to attract critical praise as a key early example of the hard rock and heavy metal genres.