"Mama" Cass Elliot singing "Dream a Little Dream" to Tommy Smothers (about 1967) on "The Smothers Brothers Comedy Hour". She had one of the best voices of The Mamas & The Papas. She also sounded very much like Bette Midler! :-O I just love this. The video quality is crystal clear! CBS has preserved many videos in its library, including The Ed Sullivan Show, which is a treasure trove for mining musical performances!