Claude Berkeley Williamson (born November 18, 1926 in Brattleboro, Vermont) is a jazz pianist. He studied at the New England Conservatory of Music before moving to jazz, influenced mainly by Teddy Wilson, then by Al Haig and Bud Powell. in 1947 he moved to California, working first with Teddy Edwards, then with Red Norvo in San Francisco, with Charlie Barnet in 1949, and with June Christy for two years. Later he worked with Max Roach, Art Pepper, and others.

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