Ammo (born Joshua Coleman) is an American songwriter and record producer. In November 2008, Ammo was signed to producer Dr. Luke's publishing company Prescription Songs as an exclusive producer and songwriter. Ammo has gone on to write and produce songs for Beyoncé, Ke$ha, Katy Perry, Pitbull, Maroon 5, Britney Spears, Jessie J, Jesse McCartney, Jason Derulo, Mike Posner and Becky G.