4AD compiles Colourbox’s 1982-86 output on 4-disc box set, featuring mixes, BBC session

4AD this spring will commemorate the 30th anniversary of genre-bending electronic pioneers Colourbox by collecting the group’s full studio output in a four-disc, 59-track box set that includes the free mini-album given away along with initial pressing of the group’s 1985 debut, plus 12-inch mixes and a BBC session.