Fleetwood Mac - Tusk peaked at #4 in the US, spent over five months within the top 40, and was certified double platinum for shipping two million copies. Tusk is the 12th album by the British/American rock band Fleetwood Mac . Released in 1979, it is considered experimental, primarily due to Lindsey Buckinham's sparser songwriting arrangements and the influence of punk rock and new wave on his production techniques.