Peter Goddard Lieberson (25 October 1946 – 23 April 2011) was an American composer of contemporary classical music.[1] His song cycles include two finalists for the Pulitzer Prize for Music: Rilke Songs and Neruda Songs; the latter won the 2008 Grawemeyer Award for Music Composition and both were written for his wife, the mezzo-soprano Lorraine Hunt Lieberson. His three piano concertos were each premiered by the pianist Peter Serkin, with the 1st and 3rd also being Pulitzer finalists.