Robert Lamm is an American singer-songwriter and musician best known as a founding member of the rock band Chicago. Born on October 8, 1944, in Brooklyn, New York, Lamm's work primarily spans the genres of rock, jazz, and pop. He is celebrated for his contributions as a vocalist, keyboardist, and principal songwriter for the band. Lamm’s notable works include iconic Chicago hits like "25 or 6 to 4," "Does Anybody Really Know What Time It Is?," and "Saturday in the Park." His songwriting often features complex arrangements and thoughtful lyrics, blending rock with elements of jazz and classical music. The band Chicago, formed in 1967, became one of the most successful American rock bands, selling over 100 million records worldwide. Lamm's impact on music extends beyond his work with Chicago, influencing a generation of musicians with his innovative songwriting and commitment to blending genres. He remains an active performer and songwriter, contributing to Chicago's ongoing legacy and the broader landscape of American rock music.