Answer
Burn, released in 1974, marked a significant shift in Deep Purple's sound with the addition of David Coverdale on lead vocals. Coverdale's powerful and soulful voice brought a new dimension to the band, complementing the virtuoso playing of Ritchie Blackmore and Jon Lord. The album showcased a blend of hard rock and funk influences, with standout tracks like "Burn" and "Mistreated" becoming enduring classics.