This piece was first performed by the Juilliard Orchestra in April 2004, conducted by Jeffrey Milarsky.

For tenor & string quartet. First printing. In seven movements. With a composer's note. Dedicated to Nick Phan. Commissioned by the Philadelphia Chamber Music Society. Premiered by Nick Phan and

For large ensemble. Tvisongur is a specific type of Icelandic two-part singing that can be found in texts as well as oral

An opera in two acts. Revised edition, with piano reduction. Libretto by Craig Lucas. Commissioned by the Metropolitan Opera. Premiered by the English National Opera, June 2011. Vocal score, 343 p.

For solo viola & orchestra. First printing. Commissioned by a consortium, including Orquesta y Coro Nacionales de Espana, and dedicated to Nadia Sirota. Premiered in February, 2015. Orchestral parts are