The name of the longest-running Broadway show is "The Phantom of the Opera." Premiering in 1988, this musical, composed by Andrew Lloyd Webber, features a haunting love story set in the Paris Opera House. It tells the tale of a disfigured musical genius known as the Phantom, who resides beneath the opera house and becomes infatuated with Christine Daaé, a young singer. "The Phantom of the Opera" has captivated audiences with its memorable score, elaborate sets, and dramatic storytelling. Throughout its remarkable run, it has garnered numerous awards, including multiple Tony Awards, making it a significant cultural landmark in musical theater history.