Oscar Peterson (August 15, 1925 – December 23, 2007) was a Canadian jazz pianist and composer. Considered a virtuoso and one of the greatest jazz pianists of all time, Peterson released more than 200 recordings, and received numerous awards and honours. He played thousands of concerts worldwide in a career lasting more than 60 years. He was called the "Maharaja of the keyboard" by Duke Ellington, simply "O.P." by his friends, and informally in the jazz community, "the King of inside swing".