Mr. Sims has been highly praised for his moving interpretations of African American spirituals, and has given numerous recitals of them throughout the United States, South America, Europe, Africa and Asia. He has appeared with many orchestras in the U.S., and toured Japan with the Pacific Music Festival Orchestra where he was featured in a nationally televised performance of Bernstein's Opening Prayer. In 2005, Sims made his recital debut at Carnegie Hall and was invited by Jessye Norman to participate in Honor! A Celebration of the African American Cultural Legacy at Carnegie Hall in March of 2009. He recently appeared with the Mormon Tabernacle Choir and made his debut in the United Kingdom with the Gibraltar Philharmonic. He has performed in concert at New York’s Lincoln Center, the Smithsonian Institution, the Ravinia, Chautauqua, Savannah, Grant Park, and Big Arts summer music festivals, the Latour de France International Music Festival, and the celebrated American Church in Paris. Under the auspices of Canti Classics, Community Concerts, and the Live On Stage Series, Sims has performed more than 150 recitals throughout the United States.