Question: What movie is the 72 stone steps before the entrance of the Philadelphia Museum of Art, whose theme song is properly entitled, "Gonna Fly Now"?

Context articles: Crucifixion Diptych (van der Weyden)
Rocky Steps
Perelman Building
Gonna Fly Now
Nick Waplington
Rocky (soundtrack)
Marcia Marcus
Purvis Young
Sondra Sherman
Claire Van Vliet

Crucifixion Diptych — also known as Philadelphia Diptych, Calvary Diptych, Christ on the Cross with the Virgin and St. John, or The Crucifixion with the Virgin and Saint John the Evangelist Mourning — is a diptych attributed by some art historians to the Early Netherlandish artist Rogier van der Weyden, completed c. 1460, today in the Philadelphia Museum of Art.
 The panels are noted for their technical skill, visceral impact and for possessing a physicality and directness unusual for Netherlandish art of the time.
 The Philadelphia Museum of Art describes work as the "greatest Old Master painting in the Museum."
The 72 stone steps before the entrance of the Philadelphia Museum of Art, in Philadelphia, Pennsylvania, have become known as the "Rocky Steps" as a result of their appearance in the triple-Oscar-winning film "Rocky" and all of the series' sequels except for "Rocky IV", in which the eponymous character runs up the steps to the song "Gonna Fly Now".
 Tourists often mimic Rocky's famous climb, a metaphor for an underdog or an everyman rising to a challenge.
 A bronze "Rocky" statue was briefly situated at the top of the steps for the filming of "Rocky III".
 This statue, now located at the bottom right of the steps, is a popular photo opportunity for visitors.
 The top of the steps offers a commanding view of Eakins Oval, the Benjamin Franklin Parkway, and Philadelphia City Hall.
The Ruth and Raymond G. Perelman Building—originally the Fidelity Mutual Life Insurance Company Building—is an annex of the Philadelphia Museum of Art containing exhibition galleries, offices, conservation labs, and the museum library.
 It is an Art Deco building that features cathedral-like entrances and is adorned with sculpture and gilding.
 The building is listed on the National Register of Historic Places.
 The Perelman Building is located at the intersection of Pennsylvania Avenue and Fairmount Avenue, facing the Philadelphia Museum of Art's main building across Kelly Drive.
"Gonna Fly Now", also known as "Theme from "Rocky"", is the theme song from the movie "Rocky", composed by Bill Conti with lyrics by Carol Connors and Ayn Robbins, and performed by DeEtta West and Nelson Pigford.
 Released in February 1977 with the movie "Rocky", the song became part of American popular culture after main character Rocky Balboa as part of his daily training regimen runs up the 72 stone steps leading to the entrance of the Philadelphia Museum of Art in Philadelphia and raises his arms in a victory pose, while the song plays.
 The song was written in Philadelphia.
 The song is also often played at sporting events, especially at sporting events in the city of Philadelphia or featuring sports teams from there.
Nick Waplington (born 1965) is a British artist and photographer based in New York City.
 Many books of his work have been published, both self-published and through Aperture, Cornerhouse, Mack, Phaidon, and Trolley.
 His work has been shown in solo exhibitions at Tate Britain and The Photographers' Gallery in London, at Philadelphia Museum of Art, Philadelphia, USA, and at the National Museum of Photography, Film & Television in Bradford, UK; and in group exhibitions at Venice Biennale, Venice, Italy and Brooklyn Museum, New York City.
 In 1993 he was awarded an Infinity Award for Young Photographer by the International Center of Photography.
 His work is held in the permanent collections of the Victoria and Albert Museum and the Government Art Collection in London and the Philadelphia Museum of Art.
Rocky: Original Motion Picture Score is a soundtrack album for the 1976 film "Rocky", composed by Bill Conti.
 It was released on vinyl in the United States on November 12, 1976 by United Artists Records, followed by a CD release by EMI Records on November 7, 1988.
 The soundtrack is notable for its inclusion of "Gonna Fly Now", the theme song from "Rocky".
Marcia Marcus (b. New York, NY, Jan. 11, 1928) is an American figurative painter whose work, which often includes self-portraits, is found in many museums including the Hirshhorn Museum and Sculpture Garden, National Museum of Women in the Arts, The Philadelphia Museum of Art, Williams College Museum of Art, and the Maier Museum of Art at Randolph College.
 Marcus studied at New York University, at Cooper Union (1950–52), and with Edwin Dickinson at the Art Students League (1954).
 In 1960 her work was included in the "Young American Artists" exhibition at the Whitney Museum of American Art.
 In 1962-63 she was the recipient of a Fulbright fellowship to France.
 She has taught at many institutions, including Purdue University; Moore Institute of Art, Science, and Industry; Rhode Island School of Design; Cooper Union; Louisiana State University; New York University; Vassar College; Cornell University; Iowa State University; and Northern Arizona University.
 Marcia Marcus performed the first "Happening" conceived and directed by a woman.
 Red Grooms, Bob Thompson and Dick Bellamy performed "In The Garden: A Ballet" at the Delancey Street Museum January 1960 .
 Marcia Marcus is represented by the Eric Firestone Gallery in New York City.
Purvis Young (February 4, 1943 – April 20, 2010) was an American artist from the Overtown neighborhood of Miami, Florida.
 Young's work, often a blend of collage and painting, utilizes found objects and the experience of African Americans in the south.
 A self-taught artist, Young gained recognition as a cult contemporary self-taught artist, with a collectors' following including the likes of Jane Fonda, Damon Wayans, Jim Belushi, Dan Aykroyd, among others.
 In 2006 a feature documentary entitled "Purvis of Overtown" was produced about his life and work.
 His work is found in the collections of the American Folk Art Museum, the Corcoran Gallery of Art, the High Museum of Art, the National Museum of African American History and Culture, the Philadelphia Museum of Art, among others.
 Visit Purvis Young Museum, in Fort Lauderdale, Florida.
Sondra Sherman (b. 1958, in Philadelphia, Pennsylvania) is an American painter and jewelry maker.
 Her work is currently in the Smithsonian American Art Museums collection of American jewelry.
 Sherman majored in painting and jewelry at the Tyler School of Art in Philadelphia before moving to Germany in 1984.
 At the Akademie der Bildenden Künste in Munich, Sherman’s work reflected the school’s emphasis on strong design.
 More recently, however, the artist’s work has begun to express a sense of human character and emotion.
 Sherman also has works at the Los Angeles County Museum of Art (LACMA), Metropolitan Museum of Art, NY, Philadelphia Museum of Art, Museum of Fine Arts, Boston, Museum of Art and Design, NY Racine Museum of Art, WI, RISD Museum, Providence, RI, Myers School of Art, Akron, OH, and the City Museum, Turnov, Czech Republic.
Claire Van Vliet (born 1933 in Ottawa, Ontario) is a fine artist, illustrator and typographer who founded Janus Press in San Diego, California in 1955.
 Van Vliet received the Bachelor of Arts in 1952 from San Diego State College, and the Master of Fine Arts from Claremont Graduate School in 1954.
 In 1955 she moved to Europe, shortly after her first publications, then returned to the United States in 1957.
 She worked for John Anderson of Lanston Monotype Company in Philadelphia before moving to Madison, Wisconsin.
 She made several trips back to Europe and continued her education in hand typesetting and compositing.
 She taught drawing and printmaking classes at the Philadelphia Museum School of Art and Philadelphia Museum College of Art from 1965-1966.
 In 1967 she established a typographic workshop in Madison, Wisconsin.
 The Janus Press has been based in Newark, Vermont since Van Vliet settled there in 1966.