Jennifer Elaine Higdon is an American composer of contemporary classical music. She has received many awards, including the 2010 Pulitzer Prize for Music for her Violin Concerto and three Grammy Awards for Best Contemporary Classical Composition for her Percussion Concerto in 2010, Viola Concerto in 2018, and Harp Concerto in 2020. Elected a Member of the American Philosophical Society in 2019, she was a professor of composition at the Curtis Institute of Music from 1994 to 2021.

George Henry Crumb Jr. was an American composer of avant-garde contemporary classical music. Early in his life he rejected the widespread modernist usage of serialism, developing a highly personal musical language which "range[s] in mood from peaceful to nightmarish". Crumb's compositions are known for pushing the limits of technical prowess by way of frequent use of extended techniques. The unusual timbres he employs evoke a surrealist atmosphere which portray emotions of considerable intensity with vast and sometimes haunting soundscapes. His few large-scale works include Echoes of Time and the River (1967), which won the 1968 Pulitzer Prize for Music, and Star-Child (1977), which won the 2001 Grammy Award for Best Contemporary Classical Composition; however, his output consists of mostly music for chamber ensembles or solo instrumentalists. Among his best known compositions are Black Angels (1970), a striking commentary on the Vietnam War for electric string quartet; Ancient Voices of Children (1970) for a mixed chamber ensemble; and Vox Balaenae (1971), a musical evocation of the humpback whale, for electric flute, electric cello, and amplified piano.