theatlantic:

Besides producing popular Christmas standards, Connick is known for his acting in movies (Hope Floats,Independence Day), on Television (Will & Grace), and on stage (The Pajama Game). But his real jam is music. Connick attended the Manhattan School of Music after which he provided the soundtrack for When Harry Met Sally. Since then, he has received three Grammy’s and produced almost 30 albums. His invented apparatus? ”System and method for coordinating music display among players in an orchestra”

HC, Jr. has been using his self-developed digital sheet music for years, as highlighted in this 2002 NYT article:

For technical advice, he turned to his neighbor David Pogue, who is a former Broadway conductor and a computer guru to the stars, whose clients have included Stephen Sondheim and Mia Farrow. (Mr. Pogue, who also writes the State of the Art column for the weekly Circuits section of this newspaper, has no commercial ties to Mr. Connick’s invention.) ”A lot of the guys I knew from my pit work on Broadway said that it would never work,” Mr. Pogue recalled. ”They said the computer would crash or the screen wouldn’t refresh itself in time for a professional situation.”

Celebrity Invention: Harry Connick Jr.’s Digital Sheet Music