"Cats" is a musical composed by Andrew Lloyd Webber, based on the poetry of T.S. Eliot. It premiered in 1981 in the West End and became one of the longest-running shows in musical theater history. The story revolves around a group of cats called the Jellicles, who gather for their annual Jellicle Ball to decide which cat will ascend to the Heaviside Layer and be reborn. The musical features iconic songs, including "Memory," sung by the character Grizabella. The production is known for its elaborate costumes and choreography, showcasing the unique personalities of each cat. "Cats" has been adapted into a film and continues to be performed worldwide.