Stephen Flaherty (born September 18, 1960) is an American composer of musical theatre and film. He works most often in collaboration with the lyricist/book writer Lynn Ahrens. They are best known for writing the Broadway musicals Ragtime, which was nominated for thirteen Tony Awards, two Grammy Awards, and won the Tony for Best Original Score; Once On This Island, which won the Tony Award for Best Revival Of A Musical, the Olivier Award for London's Best Musical, and was nominated for a Grammy Award and eight Tony Awards; and Seussical, which was nominated for a Grammy and is now one of the most performed shows in America. Flaherty was also nominated for two Academy Awards and two Golden Globe Awards (with Lynn Ahrens) for his songs and song score for the animated film musical Anastasia.