Listen to Isochronic Tones for Brainwave Entrainment online. Isochronic Tones for Brainwave Entrainment is an Unknown language song and is sung by Relaxation Music System. Isochronic Tones for Brainwave Entrainment, from the album Relaxation Music Heaven: Ultimate Relaxing Songs, Delta Waves & Isochronic Tones for Brainwave Entrainment, was released in the year 2015. The duration of the song is 4:00. Download Unknown songs online from JioSaavn.