Listen to Deep Focus online. Deep Focus is an Instrumental language song and is sung by Harper Zen. Deep Focus, from the album Concentration Music for Work: Soft Piano and Nature Sounds, Bird Sounds, Forest Sounds and Ambient Music For Studying, Deep Focus, Concentration and Work Music and Study Music, was released in the year 2021. The duration of the song is 2:20. Download Instrumental songs online from JioSaavn.