Rock music originated in the 1950s as rock and roll in the United States, developing from roots in 1940s' and 1950s' rock and roll, blues, rhythm and blues and country music. It also incorporated influences from other genres like electric blues, folk, jazz and classical music. Considered one of the most diverse genres, rock includes subgenres and popular artists like Led Zeppelin, The Who, Pink Floyd, The Doors, Queen and Fleetwood Mac. Rock music traditionally uses instruments like guitars, bass guitars, drums and occasionally piano or brass, with loud, sometimes unclear vocals and guitar or instrumental solos.