Deep Purple were forced to move to the Grand Hotel in Montreux, where they eventually recorded the album, again using the Rolling Stones’ mobile studio. They still needed one more song, so they built “Smoke on the Water” using Gillan’s lyric and the riff Ritchie Blackmore brought in. The result was a track that told the story of those bizarre events almost at the exact moment they had just happened, since the sessions lasted from December 6 to December 21.