Forward-thinking guitarist, composer and bandleader Mary Halvorson comes to Roulette to unveil new material for her largest band yet, a seven-piece ensemble built around her working quintet. Playing new charts composed on a grant from Chamber Music America, she'll put trumpeter Jonathan Finlayson, saxophonists Jon Irabagon and Ingrid Laubrock, trombonist Jacob Garchik, bassist John Hébert and drummer Ches Smith through their paces.