Listen to A Lesson in Relaxation online. A Lesson in Relaxation is an English language song and is sung by Serenity Spa Music Relaxation, Nature Sounds for Sleep and Relaxation and Relaxing Spa Music Zone. A Lesson in Relaxation, from the album February 2018: Essential Winter Chillout Music Collection, was released in the year 2018. The duration of the song is 0:50. Download English songs online from JioSaavn.