Les McCann, innovative jazz musician best known for 'Compared to What,' dies at 88Les McCann: Influential jazz musician dies at 88 - The Associated Press

Les McCann, a prolific and influential musician and recording artist who helped found the soul-jazz genre and became a favorite source for sampling by Dr. Dre, A Tribe Called Quest and hundreds of other hip-hop performers, has died. He was 88. McCann was best…