Listen to Slow Atmospheric Rock Backing Track in Cm | 90bpm online. Slow Atmospheric Rock Backing Track in Cm | 90bpm is an Unknown language song and is sung by Monster Backing Tracks. Slow Atmospheric Rock Backing Track in Cm | 90bpm, from the album Hard Rock Melodic Rock Backing Tracks, was released in the year 2022. The duration of the song is 5:02. Download Unknown songs online from JioSaavn.