"Known Unknowns" is billy woods’ follow-up to 2013’s Blockhead collaboration "Dour Candy". Blockhead is still behind the boards here but there are also a couple beats from his longtime collaborator Aesop Rock. But the center of the whirlwind is still woods, who re-emerges from a two-year hiatus after releasing the avant-garde "Today, I Wrote Nothing" in early 2015. Known Unknowns finds the artist on more melodic ground, but still his esoteric, acerbic self, spinning verses equal parts joy and terror, wry wit and blind rage. There are guest appearances from ELUCID (Armand Hammer), as well as Aesop Rock, Homeboy Sandman, Googie, singer Barrie McLain and DJ Mo Niklz. Since Dour Candy, Blockhead has worked with Aesop, Sandman and MarQ Spekt but Known Unknowns shows that he and woods have developed their own unique chemistry. The album had two singles, "Groundhogs Day" on May 11, 2017, and "Wonderful" on May 24, 2017. The latter features Aesop Rock again, after their first collab on "Tumbleweed" in 2013. The single artwork for both singles would later be used as the digital album cover for Known Unknowns, replacing the standard physical edition. "Illegal Tints" released on August 16 and currently remains a non-album single, however considering the time of release and it being produced by Blockhead, its likely that it originated from the same sessions as the rest of the album. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.