Oscar Emmanuel Peterson, CC, CQ, O.Ont. (15 August 1925 – 23 December 2007)was a Canadian jazz pianist and composer. He was called the "Maharaja of the keyboard" by Duke Ellington, "O.P." by his friends, and was a member of jazz royalty. He released over 200 recordings, won seven Grammy Awards, and received other numerous awards and honours over the course of his career. He is considered to have been one of the greatest pianists of all time, who played thousands of live concerts to audiences worldwide in a career lasting more than 65 years.

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Ray Charles Robinson (September 23, 1930 – June 10, 2004), known by his stage name Ray Charles, was an American pianist and singer, who shaped the sound of rhythm and blues. He brought a soulful sound to country music and pop standards through his Modern Sounds recordings, as well as a rendition of "America the Beautiful" that Ed Bradley of 60 Minutes called the "definitive version of the song, an American anthem — a classic, just as the man who sung it." Frank Sinatra called him "the only true genius in the business".

In 2004, Rolling Stone Magazine ranked Charles number ten on their list of the 100 Greatest Artists of All Time and also voted him number two on their November 2008 list of The 100 Greatest Singers of All Time.