Nico Muhly (b.1981) is an American composer and sought-after collaborator whose influences range from American minimalism to the Anglican choral tradition. The recipient of commissions from The Metropolitan Opera, Carnegie Hall, Los Angeles Philharmonic, and others, he has written more than 100 works for the concert stage, including the opera Marnie (2017), which was staged by the Metropolitan Opera in the fall of 2018. His work for stage and screen include music for the Broadway revival of The Glass Menagerie and scores for films including the Academy Award-winning The Reader. Born in Vermont, Muhly studied composition at the Juilliard School before working as an editor and conductor for Philip Glass. He lives in New York City.

Xavier F. Salomon is the deputy director and Peter Jay Sharp Chief Curator at the Frick Collection in New York. He is the author of many other volumes in the Frick Diptych series including, most recently Titian's Pietro Aretino and Rembrandt's Polish Rider.