Question: Ammo is an American record producer that produced songs by an American pop rock band featuring what lead singer?
Sentence (from "Ammo (musician)"): Ammo has co-written and produced songs for Beyoncé, Kesha, Katy Perry, Pitbull, Maroon 5, Britney Spears, Jessie J, Jason Derulo, Mike Posner, Fifth Harmony, R. Kelly, Flo Rida, and Selena Gomez.
Relevant evidence: Yes