Listen to Mellow Tune online. Mellow Tune is an Instrumental language song and is sung by RelaxMyCat, Cat Music Dreams and Cat Music Therapy. Mellow Tune, from the album Calming Music for Cats: Sleeping Therapy Songs for Anxious Cats, was released in the year 2020. The duration of the song is 2:59. Download Instrumental songs online from JioSaavn.