Patrick Castillo (1979), an American composer. He holds a B.A. in music composition and sociology from Vassar College, where his teachers included Lois V. Vierk, Annea Lockwood, and Richard Wilson. While at Vassar, he served as composer-in-residence for the Mahagonny Ensemble, a collective of performers specializing in twentieth century music. His 'Requiem aeternam' for mixed chorus and chamber ensemble, composed for the Mahagonny, was awarded the 2001 Jean Slater Edson Prize in Music Composition.