Oscar Emmanuel Peterson, (August 15, 1925 – December 23, 2007) was a Canadian jazz pianist and composer. He was called the "Maharaja of the keyboard" by Duke Ellington, but simply "O.P." by his friends. He released over 200 recordings, won eight Grammy Awards, and received numerous other awards and honours. He is considered to have been one of the greatest jazz pianists, and played thousands of concerts worldwide in a career lasting more than 60 years.