Question: Who stars as a jazz pianist in the film that features the song "Audition (The Fools Who Dream)"?
Context: Peter Apfelbaum (born August 21, 1960) is an American avant-garde jazz pianist, tenor saxophonist, drummer and composer born in Berkeley, California.  He first emerged on the jazz scene in the late 1970s, performing with Carla Bley from 1978–1982 and touring with Warren Smith and Karl Berger.  Around this time Apfelbaum also studied and worked with musicians involved with the Creative Music Studio in Woodstock, New York.  He graduated from Berkeley High School in 1978 in a class that included jazz pianist Benny Green. "Audition (The Fools Who Dream)" is a song from the film "La La Land" (2016).  The music of the song was composed by Justin Hurwitz while the lyrics were provided by Benj Pasek and Justin Paul.  In the film, the song is performed by Emma Stone.  It received a nomination for Best Original Song at the 89th Academy Awards. Sam Stephenson (born 1966 in Chapel Hill, North Carolina) is a writer who grew up in Washington, North Carolina.  Since 1997 he has been studying the life and work of photographer W. Eugene Smith, authoring three books of Smith's work including The Jazz Loft Project which was published by Alfred A. Knopf in November 2009.  The Jazz Loft Project was accompanied by an exhibition, a public radio series, a website, and a multi-media collaboration with jazz pianist Jason Moran.  In September 2010 the Jazz Loft Project won the "Innovative Use of Archives Award" from the Archivists Roundtable of Metropolitan New York.  Stephenson's 2001 book, Dream Street: W. Eugene Smith's Pittsburgh Project, was published by W.W. Norton and remains in print in 2010.  Stephenson has been associated with the Center for Documentary Studies at Duke University since 1996, either as a consultant or a full-time employee and instructor. Martan Mann is an American jazz pianist and educator living in Boulder Creek, California.  He performs with the Martan Mann Trio, the Martan Mann & Mannkind (contemporary jazz band) and has performed with George Young and Dmitri Matheny.  A graduate of San Jose State University, San Francisco State University, Hawaii Pacific College, and the University of Hawaii, he is a musical director at Capitola Theater in Capitola, California and is on the board of directors for the Jazz Society of Santa Cruz, California.  Jazz educational books include "Jazz Improvisation for the Classical Pianist" (1989), "New Age Improvisation for the Classical Pianist" (1994), and "Improvising blues piano" (1997).  He is also the author of an jazz educational DVD, "Jazz Skills for Piano". Cyrus Chestnut (born January 17, 1963) is an American jazz pianist, composer and producer.  In 2006, Josh Tyrangiel, music critic for "Time", wrote: "What makes Chestnut the best jazz pianist of his generation is a willingness to abandon notes and play space."  Chestnut enjoys mixing styles and resists being typecast in any one niche, though his gospel sound is apparent on a number of his recordings. Terje Bjørklund (born 2 January 1945 in Narvik, Norway) is a jazz pianist and composer.  He was an active jazz pianist until approximately 1980.  From then on he has concentrated on composing. Daniel Lee Knight (born September 26, 1953, Ottumwa, Iowa), is a jazz pianist, composer, educator, and author.  His early piano education was in the classical tradition; his first piano teacher, Tillie Maither, was a former student of Ignace Jan Paderewski.  His interest in jazz began at an early age, and by age seven he was already transcribing the works of Dave Brubeck, Erroll Garner and Duke Ellington.  In 1958, on seeing NBC Television's "The Subject Is Jazz", the first ever television series on the subject of jazz, and whose Musical Director was jazz pianist Billy Taylor, he knew he had to become a jazz pianist, too. Kenny Drew Jr. (June 14, 1958 – August 3, 2014) was an American jazz pianist.  His music is known for its hard-swinging bluesy sound and large, two-handed rooty chords contrasting with fast runs.  The son of jazz pianist Kenny Drew, he did not credit his father as an influence. Bill Clifton (July 6, 1916 – February 26, 1967) was a Canadian jazz pianist based in New York City for almost three decades.  He played with many of the name bands of the swing era and accompanied some of the music industry's most noted vocalists He is remembered today as an early and important influence on the great jazz pianist Bill Evans. La La Land is a 2016 American musical romantic comedy-drama film written and directed by Damien Chazelle.  It stars Ryan Gosling as a jazz pianist and Emma Stone as an aspiring actress, who meet and fall in love in Los Angeles while pursuing their dreams.  The film's title refers simultaneously to music, the city of Los Angeles, and to the idiom for being out of touch with reality.
Answer: Ryan Gosling