John Henry Ryan is an American singer, songwriter and record producer. He is best known for being featured in Pitbull's 2014 hit "Fireball" which he also co-wrote. He has written several songs for British boyband One Direction, including "Best Song Ever", "Story of My Life", and "Steal My Girl" among others. Additionally he has written for Jason Derulo, Cody Simpson, JLS, Fifth Harmony, Emblem3, Nick Jonas, and Olly Murs. In November 2013, he signed a publishing contract with Big Deal Music and BMG Chrysalis.