High Quality Content by WIKIPEDIA articles! Robert William Lamm (born October 13, 1944) is an American keyboardist, singer and songwriter best known for being a founding member of the rock 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," and "25 or 6 to 4."Apart from his involvement with Chicago, Lamm has also recorded several solo albums. He also has guest lectured on music production at Stanford University.