Manning serves as co-head of the agency’s Nashville office, where he works with acts such as Maroon 5, Niall Horan, Tate McRae, Meghan Trainor, 5 Seconds of Summer, Demi Lovato, Nickelback, New Kids on the Block, Pentatonix and Julia Michaels.

What’s the best piece of advice you’ve ever received?

I cannot recall where I first heard it, but I have since adopted it as credo: “Assumption is the mother of all failures.”