 Pepper's Lonely Hearts Club Band", "Magical Mystery Tour").Their 1968 self-titled album (also known as the "White Album") in particular featured a wide range of styles, including ska ("Ob-La-Di, Ob-La-Da"), blues ("Yer Blues"), hard rock ("Helter Skelter" and the single version of "Revolution"), and a musique concrète sound collage ("Revolution 9").The group also composed numerous ballads, including "Michelle" and "The Long and Winding Road".