Ms. Horn won the 2013 Sarah Vaughan International Jazz Vocal Competition and the 2015 Thelonious Monk Institute International Jazz Competition and, shortly after, was signed by Concord Records. In 2017, she released her debut album, A Social Call, which was nominated for a Grammy Award. Ms. Horn continued to tour nationally and internationally, honing her vocal, performance and writing skills, to get across her message about the global need for love and social change in the world. In 2019, she released Love and Liberation which also received a Grammy nomination. The following year, she published her book, Strive From Within: The Jazzmeia Horn Approach, while recording her big band album, Dear Love.

Dear Love, an album of encouragement through poetry and spoken word addressing the aspects of her community, her love and herself, was released in September 2021.
All while performing, writing, and preparing for a fall 2023 release of her new album, Ms. Horn is teaching students and conducting outreach programs across the globe through The Jazz Horn International Vocal Initiative.