Listen to Sit Back and Sup online. Sit Back and Sup is an Instrumental language song and is sung by Blue Moon Swing. Sit Back and Sup, from the album 午後ののんびりカフェタイム:Chill Swing - The Vibes of Sentimentality, was released in the year 2022. The duration of the song is 1:59. Download Instrumental songs online from JioSaavn.