Sean O’Hara was born in St. Louis, Missouri and began playing the bass during the fifth grade. He earned his Bachelor of Music degree at The Juilliard School where he studied with noted double bass pedagogue Homer Mensch. Following graduation, Sean spent three years in Miami as a member of the New World Symphony under the direction of Michael Tilson Thomas. In 2009, he was awarded a Master of Music degree from Carnegie Mellon University.