Listen to Brain Exercise - Smooth Relaxation online. Brain Exercise - Smooth Relaxation is an Instrumental language song and is sung by High Focus. Brain Exercise - Smooth Relaxation, from the album Deep Study Music for Exams and Concentration – Deepen Your Concentration with the Perfect Music for Studying and Brain Stimulation, was released in the year 2018. The duration of the song is 7:26. Download Instrumental songs online from JioSaavn.