After more than two decades, Canadian collective Godspeed You! Black Emperor is still exploring the boundaries of instrumental rock. On its latest album, Luciferian Towers, the group channels an orchestral cacophony, layering frantic arrangements of violins, horns and drums with towering guitar riffs. The multi-part compositions that fill the record are some of the densest and most cathartic entries in GSYB's catalog, patiently building toward huge musical moments that are frequently emulated, but rarely replicated, by its post-rock peers. Solo guitarist KGD opens the show on March 18, while experimental guitarist Tashi Dorji joins forces with Danish saxophonist Liberty as the supporting act on March 19.