Sigur Rós are scheduled to perform at Madison Square Garden on Monday, March 25. The group is currently touring the world in support of their latest album, Valtari, and will be debuting new material such as their recent single, “Kveikur.” They will also incorporate an 11-piece live band along with an extensive light show into their act. The Icelandic trio’s show at MSG begins at 8 p.m., and tickets are $56.