He collaborates with artists on various projects that include opera (Independence Eve with Daniel Neer); Biblical illumination (folia ligni for Spark and Echo Arts); and multi-media (The Gretel Project with Lauren K. Alleyne, Catherine Chung, and Tomiko Jones). As a pianist, he performs regularly with Rhymes With Opera and pulsoptional. -A MacDowell Fellow, Sidney is currently the Chair of the Department of Music at Adelphi University in Garden City, New York, where he teaches music theory and composition. He is also a cantor and sings in the church choir of The Church of St. Francis Xavier in Manhattan.