Question: Which Andrew Lloyd Webber musical featuring performers on roller skates includes the duet "Only You"?
Context: The Wizard of Oz is a musical based on the 1939 film "The Wizard of Oz", with a book adapted by Andrew Lloyd Webber and Jeremy Sams.  The musical uses the Harold Arlen and E. Y. Harburg songs from the film and includes some new songs and additional music by Andrew Lloyd Webber and additional lyrics by Tim Rice. Starlight Express is a rock musical by Andrew Lloyd Webber (music), Richard Stilgoe (lyrics), with later revisions by Don Black, David Yazbek, Alistair Lloyd Webber and Nick Coler.  The actors famously perform wearing roller skates, with original choreography by Arlene Phillips.  In the story, a child’s train set magically comes to life, and the various engines compete to become the "Fastest Engine in the World".  The underdog, Rusty the steam train, has little chance until he is inspired by the legend of the Starlight Express, ultimately winning both the race and the heart of first-class coach Pearl. Cats is a 1998 direct-to-video musical film of the long-running West End production of "Cats", Andrew Lloyd Webber's musical based on "Old Possum's Book of Practical Cats" by T. S. Eliot.  Lloyd Webber himself personally oversaw orchestration for the film and called on Gillian Lynne, the original show's choreographer, to personally train the cast for the film.  Trevor Nunn, the original director, did not serve as the director of this production.  Andrew Lloyd Webber and others on the production team for the film wanted to keep the feeling that viewers watching the film could still get the sense of seeing the show live, by having all views be facing the stage, therefore, getting multiple views of the set, but still feel like the viewer is part of a live audience, with several close-ups.  Initially released to VHS and subsequently DVD and Blu-ray, the film has since been shown on television channels including PBS, the BBC, and Ovation TV.  It was filmed at the Adelphi Theatre in London. Our Kind of Love is a ballad from the 2000 musical "The Beautiful Game" by Andrew Lloyd Webber.  The lyrics were written by Ben Elton.  Webber used a Giacomo Puccini aria as the melody for this song, but he had previously used the same tune for the song "The Heart is Slow to Learn" in the 1990s, part of an intended sequel to the Webber musical "Phantom of the Opera".  Webber used the tune a third time for his song "Love Never Dies" from the 2010 musical of the same name, which finally served as a sequel to "Phantom". There have been many literary and dramatic works based on Gaston Leroux's novel "The Phantom of the Opera," ranging from stage musicals to films to children's books.  Some well known stage and screen adaptations of the novel are the 1925 film and the Andrew Lloyd Webber musical (see "The Phantom of the Opera (1986 musical)"); Susan Kay's 1990 "Phantom" is one of the best known novels and includes in-depth study of the title character's life and experiences. "Only You" is the love duet from Andrew Lloyd Webber's "Starlight Express".  It is performed by the protagonist, Rusty, a young steam locomotive and his true love, the observation car, Pearl. Roller skating is the traveling on surfaces with roller skates.  It is a form of recreational activity as well as a sport, and can also be a form of transportation.  Skates generally come in three basic varieties: quad roller skates, inline skates or blades and tri-skates, though some have experimented with a single-wheeled "quintessence skate" or other variations on the basic skate design.  In America, this hobby was most popular, first between 1935 and the early 1960s and then in the 1970s, when polyurethane wheels were created and "Disco" oriented roller rinks were the rage and then again in the 1990s when in-line outdoor roller skating, thanks to the improvement made to inline roller skates in 1981 by Scott Olson, took hold. James Leonard Plimpton (1828, Medfield, Massachusetts - 1911) was an American inventor who is known for changing the skating world with his patented roller skates in 1863.  Plimpton's roller skates were safer and easier to use than the existing versions, his "rocker skates" or quad skates allowed people to steer just by leaning to the left or the right.  He also opened some of the earliest roller skating rinks in New York City and bougier Newport, Rhode Island.  . Lloyd Webber Plays Lloyd Webber is a 2001 album by British cellist Julian Lloyd Webber.  For the album, the musician chose to interpret songs written by his older brother, the popular musical theatre composer Andrew Lloyd Webber.  The album was recorded with the Royal Philharmonic Orchestra.  The album primarily featured classical musicians with the notable exception of Rod Argent of The Zombies. "All I Ask of You" is a song performed by Cliff Richard and Sarah Brightman during the 1986 English musical "The Phantom of the Opera".  It was written by Andrew Lloyd Webber, Charles Hart and Richard Stilgoe, and produced by Lloyd Webber.  The duet was meant for characters Christine Daaé and Raoul during the stage musical.  An operatic pop piece, its lyrics serve as dialogue between the two characters and discuss themes such as commitment and romance.  During the stage performance of "All I Ask of You", Steve Barton performs as the role of Raoul instead of Richard.  Like Lloyd Webber's song "The Music of the Night", "All I Ask of You" was compared to the music found in Giacomo Puccini's 1910 opera "La fanciulla del West".
Answer: Starlight Express