 1972, Don McLean goes to number one with the single and album, American Pie. Paul Simon's solo debut gives him a top ten hit, Mother and Child Reunion. Fast forward to March, where Neil Young has a number one album and a number one single with Heart of Gold. And Deep Purple released their quintessential album, Machine Head, which goes to number one in the UK, number seven in the US, and features the classic hit, Smoke on the Water.