Haynie has worked with several prominent artists in the music industry including Kanye West, Kid Cudi, Eminem, Lana Del Rey, Bruno Mars, Linkin Park, FKA Twigs, Florence Welch and Camila Cabello, The Neighbourhood among others.
[2] He relocated to New York City and got his start as a hip hop producer in the early 2000s, collaborating with rappers Obie Trice, Ghostface Killah, The Roots, Cormega, M.O.P., Rhymefest, and AZ.
In late 2008, Haynie, Plain Pat and Kid Cudi launched their record label, Dream On, in partnership with Kanye West's GOOD Music and Universal Motown.
On January 19, 2015, Haynie announced he would be releasing his debut studio album, titled We Fall, featuring guest appearances from Andrew Wyatt, Brian Wilson, Rufus Wainwright, Lana Del Rey, Charlotte Gainsbourg, Sampha, Devonte Hynes, Nate Ruess, Colin Blunstone, Lykke Li, Romy Madley Croft, Randy Newman, Father John Misty and Julia Holter.
[3] In 2020, Canadian music executive Merck Mercuriadis, founder of Hipgnosis Songs Fund, called Haynie “one of the most influential producers of the last decade and with Lana Del Rey, Kid Cudi, Eminem, Bruno Mars, Fun and many others he has made important records that have inspired so many other great creators.”[12]