He also founded the band Forq with keyboardist Henry Hey, and is also an owner and founder of the record label GroundUP Music.

[4] League went on to study jazz at the University of North Texas, then spent three years playing in Dallas's Gospel and R&B scene under the unofficial mentorship of keyboardist Bernard Wright.

League formed Snarky Puppy in his freshman year of college at the University of North Texas, originally consisting of him and nine of his peers.

He has performed or recorded with artists from a variety of genres including Laura Mvula, Lalah Hathaway, Joe Walsh, Chris Thile, Michael McDonald, Terence Blanchard, Esperanza Spalding, Joshua Redman, Wayne Krantz, Chris Potter, Salif Keita, Eliades Ochoa, Fatoumata Diawara, Bassekou Kouyate, Susana Baca, and Kardeş Türküler.

[citation needed] He served as musical director for David Crosby in his Lighthouse touring band, alongside Becca Stevens and Michelle Willis.

[18] The festival features performances by Snarky Puppy all three nights, with a line-up curated by League that has featured David Crosby, Béla Fleck and the Flecktones, The Wood Brothers, Robert Glasper, Knower, Concha Buika, C4 Trio, Pedrito Martinez, Jojo Mayer + Nerve, Mark Guiliana's Beat Music, John Medeski's Mad Skillet, Charlie Hunter Trio, Laura Mvula, Eliades Ochoa, Esperanza Spalding, Lionel Loueke, Joshua Redman and Terence Blanchard, as well as the full GroundUP Music roster, among others.