Robert William Lamm (Brooklyn, New York, October 13, 1944) 1 is a keyboard player, singer, songwriter and guitarist who is known, above all, for his participation in the Chicago rock band. He composed many of the group's major hits, including "Questions 67 & 68", "Does Anybody Really Know What Time Is It?", "Beginnings", "25 or 6 to 4", "Saturday in the Park", " Dialogue (Part I & II) "and others.