Arkells/IronTom

After playing U.S. festivals all summer, Canada’s Arkells have takent their talents to the clubs. Their hit song “Knocking at the Door,” a retro-leaning soulful anthem (think Fitz and the Tantrums), continues to gain traction. It’s been at the top of the Canadian charts for more than three months and has been licensed stateside by both the NHL and MLB. Expect to hear it along with catchy numbers like “Leather Jacket” at tonight’s show. (Niesel)