Porcupine Tree is unquestionably one of the most difficult-to-categorize and innovative rock bands of all time. The band was formed by musician Steven Wilson in 1987, and began essentially as a solo project for Wilson, who created all of the music. By December 1993, Wilson desired to work in a band environment, and so brought on frequent collaborators. The band, on hiatus since 2010, returns in 2022 with new album CLOSURE/CONTINUATION.