Double Barrel is an album made in collaboration between American rapper Torae and Canadian hip hop producer Marco Polo. The album was released on June 2, 2009 by Duck Down Music Inc. It was preceded by Marco Polo's critically well-received debut album Port Authority (2007), and Torae's inaugural release Daily Conversation (2008) on which Polo has produced three tracks. The album was executive produced by both artists, along with DJ Linx, Shylow of First Division, and Theo Bark. Associate producers include Duck Down founders Drew "Dru-Ha" Friedman and Kenyatta "Buckshot" Blake. The album features guest appearances from DJ Premier, Lil Fame of M.O.P., Rock of Heltah Skeltah, Guilty Simpson, Masta Ace, Sean Price, S-Roc of BrassMunk, and Saukrates. Scratches are provided by DJ Revolution, DJ Linx, and Shylow. The album was recorded by Marco Polo at The Krib, and was mixed and mastered by Ricardo Gutierrez at Stadium Red in New York City. The album was preceded by the 12-inch single "Double Barrel" featuring DJ Revolution, with B-side "Hold Up" featuring Masta Ace and Sean Price, and "Combat Drills". The track "Danger" is featured on the soundtrack of the 2013 superhero action comedy film Kick-Ass 2 as well as a backdrop music for the 1st Mission of Call of Duty Modern Warfare 2. Critical response Upon its release, the album was met with generally favorable reviews from music critics. Amanda Bassa of HipHopDX wrote, "Low points will be hard to find on Double Barrel, and the project offers up something for those craving the boom bap as well as something that feels relevant in the present." Addi "Mindbender" Stewart of KevinNottingham.com felt that "conceptually and ultimately, not much new ground is broken here. But alternately, and equally importantly, [Marco Polo & Torae] carry on certain hip hop traditions faithfully, yet in their own signature way". The reviewer claimed that the album would "essentially be thought of at as one of the more satisfying offerings of east coast rap music in 2009." Pedro "DJ Complejo" Hernandez, writing for RapReviews.com, remarked that Double Barrel is a "banging album full of unadulterated hip-hop." He believed that "Marco Polo should surely become a hot commodity with his brand of head banging boom bap beats." He also complimented Torae as "a solid emcee" because of his ability to tell stories, his "brash" braggadocio, and his passion which "matches that of the best emcees". Additionally, he