Though it caused their fanbase to pause, the acrimonious departures of singer Ian Gillan and bassist Roger Glover and the addition of singer David Coverdale and bassist Glenn Hughes actually breathed new life into a band that still had its formidable core in place. Burn has plenty of spots for Ritchie Blackmore to exert his guitar power, with both solos and syncopated work in “Lay Down, Stay Down” that no one could dare argue with. Drummer Ian Paice comes out firing on the title track, and keyboardist Jon Lord continues to provide textures that other hard rock bands simply didn’t have. The addition of the two new members paid immediate dividends in the reinvigorated songwriting (though due to contractual reasons, Glenn Hughes wasn't credited until the 30th-anniversary edition). The album’s original eight tracks formed a perfect look at the group circa 1973/74, while the bonus material is of interest due to the 2004 remixes and the inclusion of the b-side “Coronarias Redig.”