In Harmony: A Sesame Street Record  and In Harmony 2 are two Grammy Award-winning compilation albums of children’s music performed by various artists, released in 1980 and 1982, respectively.  Of the two albums, only the first album charted, reaching #156 on the Billboard 200.  Only the first album has a direct connection to the popular children’s series Sesame Street, as it includes a song performed by the characters Ernie and Cookie Monster, while no Muppet-related content appears on the second album.  Each of the albums was awarded the Grammy Award for Best Recording for Children.  (More from Wikipedia)