question: Who added lyrics to a song that was composed by a man described by John Williams as "one of the great American masters of light orchestral music"?
answer: Mitchell Parish
context: Title: Leroy Anderson
  Passage: Leroy Anderson ( ~ ); (June 29, 1908 – May 18, 1975) was an American composer of short, light concert pieces, many of which were introduced by the Boston Pops Orchestra under the direction of Arthur Fiedler.  John Williams described him as "one of the great American masters of light orchestral music."
  Title: Mohammad Nouri (singer)
  Passage: Mohammad Nouri (Persian: محمد نوری‎ ‎ ) (December 22, 1929 – July 31, 2010) was one of the foremost folk and pop singers in Iran.  Before the 1979 Iranian Revolution, Nouri was relatively unknown among Iranian pop music lovers mainly because his was string orchestral pop tunes hardly fit for disco and party entertainment, not to mention little exposure and publicity efforts on his part .  Not surprisingly, other than a few folk tunes, such as "Jaan-e Maryam" and "Gol-e Maryam," he was mostly played on the state run radio shows, such as the Army Hour or during odd hours or ibetween.  Later when the Islamic regime overhauled the entire state run mass media and most pop artists flew out of the country and later continued their career overseas for their fellow exiled Iranian concert audiences, Nouri's career flourished .  He had stayed behind since he was considered one of the "people's artists" and his work, especially the lyrics were indigenous directly from native northern folk tradition.  To the post revolutionary youth Nouri's and a host of other traditional musicians' work embodied true art unaffected by the western commercialism and its loose trappings.  After years of having been side-staged by disco and popular entertainers, Nouri began to enjoy renewed fame and reputation as his fan base grew wider and wider.  By this time he had turned full circle to folk orchestral music and almost abandoned the old string orchestral style.
  Title: Sleigh Ride
  Passage: "Sleigh Ride" is a popular light orchestral Christmas music standard composed by Leroy Anderson.  The composer had the original idea for the piece during a heat wave in July 1946 and finished the work in February 1948.  It was originally an instrumental piece; the lyrics, about someone asking another to join them for a ride in a sleigh, were written by Mitchell Parish in 1950.  The orchestral version was first recorded in 1949 by Arthur Fiedler and the Boston Pops Orchestra.  Sleigh Ride was a hit record on RCA Victor Red Seal 49-0515 (45 rpm) / 10-1484 (78 rpm), and has become a signature song for the orchestra.  The 45 rpm version was originally issued on red vinyl.  The Pops has also recorded the song with John Williams, their conductor from 1979 to 1995, and Keith Lockhart, their current conductor.
  Title: Southworth &amp; Hawes
  Passage: Southworth & Hawes was an early photographic firm in Boston, 1843–1863.  Its partners, Albert Sands Southworth (1811–1894) and Josiah Johnson Hawes (1808–1901), have been hailed as the first great American masters of photography, whose work elevated photographic portraits to the level of fine art.  Their images are prominent in every major book and collection of early American photography.
  Title: Goodbye Pork Pie Hat
  Passage: "Goodbye Pork Pie Hat" is a jazz standard composed by Charles Mingus originally recorded by his sextet in 1959 as listed below, and released on his album "Mingus Ah Um".  Mingus wrote it as an elegy for saxophonist Lester Young, who had died two months prior to the recording session, and was known to wear a broad-brimmed pork pie hat.  It is one of Mingus's best-known compositions and has been recorded by many jazz and jazz fusion artists.  Joni Mitchell added lyrics to the song for her album "Mingus", recorded in collaboration with Mingus during the months before his death.  Rahsaan Roland Kirk also composed lyrics to the song, included on his album "The Return of the 5000 Lb.  Man".
  Title: Herbert Rehbein
  Passage: Herbert "Herb" Rehbein (15 April 1922 – 28 July 1979) was a German songwriter, composer and arranger of light orchestral music.  Together with his friend and collaborator Bert Kaempfert, he was posthumously inducted into the Songwriters Hall of Fame in 1993.
  Title: Blue Tango
  Passage: "Blue Tango" is an instrumental composition by Leroy Anderson, written in 1951 and published in 1952.  It was later turned into a popular song with lyrics by Mitchell Parish.  Numerous artists have since covered "Blue Tango".
  Title: Thomas Wagner (writer)
  Passage: Thomas Wagner is an Emmy Award winning writer, producer and composer working primarily in documentary films.  He is known for his work on "Finding Lucy", an "American Masters" PBS documentary about actress Lucille Ball.  Wagner won a prime-time Emmy Award for writing and producing that film.  His script for "Finding Lucy" was also nominated for Best Documentary Script by the Writers Guild of America.  Wagner also co-produced another PBS "American Masters" documentary, "Rod Serling: Submitted for your Approval", and his script for that film bio, co-written with John Goff, was again nominated for Best Documentary Script by the Writers Guild of America.  The Serling documentary also won a Bronze Plaque at the Columbus Film Festival and a Cine Gold Eagle.  Wagner also composed the music for the Academy Award nominated film, "" which aired on HBO.
  Title: By the Sleepy Lagoon
  Passage: "By the Sleepy Lagoon" is a light orchestral valse serenade by British composer Eric Coates composed in 1930.  In 1940, lyrics were added with Coates's approval by Jack Lawrence, and the resultant song "Sleepy Lagoon" became a popular music standard of the 1940s.
  Title: Albert Ketèlbey
  Passage: Albert William Ketèlbey ( ; born Ketelbey; 9 August 1875 – 26 November 1959) was an English composer, conductor and pianist, best known for his short pieces of light orchestral music.  He was born in Birmingham and moved to London in 1889 to study at Trinity College of Music.  After a brilliant studentship he did not pursue the classical career predicted for him, becoming musical director of the Vaudeville Theatre before gaining fame as a composer of light music and as a conductor of his own works.
citations: Leroy Anderson Blue Tango