Listen to Coffee in the Key of C online. Coffee in the Key of C is an Instrumental language song and is sung by Bitter Sweet Jazz Band. Coffee in the Key of C, from the album Relaxing Coffee Moods:おいしい一杯とジャズ - Mellow Sunday, was released in the year 2023. The duration of the song is 2:01. Download Instrumental songs online from JioSaavn.