Listen to Sleep Music and Isochronic Tones online. Sleep Music and Isochronic Tones is an English language song and is sung by Winter Chic & Winter Sleep Music Academy. Sleep Music and Isochronic Tones, from the album Cozy Winter Spa - 30 Songs with Nature Ambient Background for Quiet Moments, was released in the year 2017. The duration of the song is 5:58. Download English songs online from JioSaavn.