Jazz pianist and singer Les McCann, renowned for his soul-jazz style and influence on early hip-hop, has died of pneumonia at age 88, as confirmed by his manager, Alan Abrahams. McCann was best known for the song 'Compared to What' recorded live in 1968 at the Monteaux Jazz Festival. His music, sampled by over 300 artists including Dr. Dre, Snoop Dogg, and Notorious B.I.G., played a significant role in the music industry. In 1995, despite suffering a stroke that left him partially paralyzed, McCann recovered swiftly and returned to performing within five months. His legacy continues through his extensive discography and the enduring impact of his work.