Brian Roberson, a founding member of the Procussions, has gone by Stro the 89th Key, simply Stro, and more commonly Stro Elliot. While remaining part of the Procussions, Roberson has released solo material and granted productions -- typified by a smooth synthesis of samples and original instrumentation -- to fellow artists. Amid numerous stray tracks, Roberson has released Stro's Old Beat Farm (2011), as well as a self-titled album (2016). Phonte's "Sendin My Love," Mr. J. Medeiros' "Pale Blue Dot," Eric Roberson and Phonte's "Waiting 4 Ya," and an interlude for The Hamilton Mixtape are among his commissioned works. He has also taken part in DJ Jazzy Jeff's Playlist retreats, including the session that yielded Chasing Goosebumps. ~ Andy Kellman