Listen to I'm Sad Because I'm Happy online. I'm Sad Because I'm Happy is an English language song and is sung by Oscar the Grouch and The Sesame Street Grouch Chorale. I'm Sad Because I'm Happy, from the album Sesame Street: Oscar's Trashy Songs, was released in the year 1997. The duration of the song is 2:52. Download English songs online from JioSaavn.