Theatre Development Fund is the largest not-for-profit service organization for the performing arts in the country. In addition to TDF's most visible program, its TKTS® discount ticket booths in Times Square and South Street Seaport, TDF administers a range of AUDIENCE DEVELOPMENT AND FINANCIAL ASSISTANCE PROGRAMS that encourage production of new plays and musicals and enable more New Yorkers and visitors to enjoy the riches and variety of the city's theatre, dance and music.