of Lewis Carroll. During this period, he found himself moving back towards tonality, which he felt was more appropriate for works such as his Final Alice and Adventures Underground. Del Tredici was Composer-In-Residence at the New York Philharmonic from 1988 until 1990. In 1999 and 2000 he taught at Yale University. He also has taught at Boston University, Juilliard School, and the University of Buffalo. , he was a faculty member of the City College of New York. Today, Del Tredici continues to draw on literature for his song cycles. His work has continued to draw on Lewis Carroll (particularly Alice in Wonderland), but he has also been inspired by contemporary American poets. He has also created works celebrating "gayness", acknowledging that many great composers were gay and that "it's something to be celebrated". A reviewer has noted that themes in his work examine "tormented relationships, personal transformations, and the joys and sorrows of gay life". He is a member of the American Academy of Arts and Letters and has held additional residencies at Yaddo, the Virginia Center for the Creative Arts, and the MacDowell Colony. Works Del Tredici has composed work for Michael Tilson Thomas and the Buffalo Philharmonic Orchestra. His work Adventures Underground drew inspiration from the poem The Mouse's Tail. Del Tredici has also composed works influenced by rock and folk music. He has written works for Phyllis Bryn-Julson, San Francisco Symphony, and the New York Philharmonic. He has also composed an opera and song cycles. He has written music using the work of, or as tribute to, Chana Bloch, Colette Inez, Allen Ginsberg, Thom Gunn, Paul Monette, and Alfred Corn. His In Memory of a Summer Day (part one of Child Alice) won Del Tredici a Pulitzer Prize. That piece would be developed into a ballet, which has been performed by the National Ballet of Canada and the Grand Théâtre de Genève. In 1988, his work Tattoo, commissioned by the Concertgebouw Orchestra, was debuted by Leonard Bernstein and the New York Philharmonic. 1988, Tattoo, Concertgebouw Orchestra 1990, Steps, New York Philharmonic 1998, The Spider and the Fly, New York Philharmonic 1998, Chana's Story, San Francisco Contemporary Players 1999, Dracula, Eos Orchestra 2003, In Wartime, University of Texas at Austin Wind Ensemble 2004, Gotham Glory, fp. 15 March 2005, Anthony de Mare, piano 2004, Syzygy, Asko Ensemble 2013, Bullycide, La Jolla Music Society Recognition Guggenheim Fellowship Pulitzer