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. The Grateful Dead were an American Rock Band known for their eclectic style, which fused rock, folk, bluegrass, jazz, blues and more. Known as the pioneers of the "jam band", Grateful Dead was ranked 57th by Rolling Stone in their Greatest Artists of All Time issue.