Listen to Downward Spiral (feat. Bumpy Knuckles & Onyx) online. Downward Spiral (feat. Bumpy Knuckles & Onyx) is an English language song and is sung by Ras Kass. Downward Spiral (feat. Bumpy Knuckles & Onyx), from the album Intellectual Property #So12: 20th Anniversary, was released in the year 2017. The duration of the song is 3:41. Download English songs online from JioSaavn.