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Robert Lamm
Acting
Robert William Lamm (born October 13, 1944) is an American keyboardist, singer and songwriter who came to fame as a founding member of the band Chicago. He wrote many of the band's biggest hits, including "Does Anybody Really Know What Time It Is?", "Beginnings", "Saturday in the Park", "Dialogue", and "25 or 6 to 4". He is one of three founding members (alongside Lee Loughnane and James Pankow) still performing with the group.
