Mike Shiftlet has released the fourth volume of his 24-hour Tetracosa project. Tetracosa has eight volumes total, and will be released throughout the course of the year. The piece involves "350 unique sound objects categorized and layered such that no two moments are alike" and was inspired by John Cage's i-Ching works and Wandelweiser. You can stream a couple of tracks above or via the album's Bandcamp page here.