Rockabye Baby transforms rock favorites into beautiful instrumental lullabies. Guitars and drums are traded for xylophones and bells, and the volume is turned down from an eleven to a two. Tonight, the cradle will rock. Fleetwood Mac is a British rock band that has sold over 100 million albums worldwide. Their 1977 album RUMOURS is the sixth-highest-selling album of all time, having sold over 45 million copies. They were inducted into the Rock and Roll Hall of Fame in 1988.