Question: Who was the American bass singer that starred in the British musical drama film Big Fella?

Context paragraphs:
Nick Massi: Nicholas E. Macioci (September 19, 1927 – December 24, 2000), known as Nick Massi, was an American bass singer and bass guitarist for The Four Seasons.

Ryan Allen: Ryan Allen is an American bass singer best known for his work in opera.  He has performed professionally in all 50 states, appeared with numerous American opera companies, and sung as a soloist in Russia, Israel, Poland, Norway and Sweden.

Bruce Abel: Bruce Abel is an American bass singer.

George Younce: George Wilson Younce (February 22, 1930 – April 11, 2005) was an American bass singer, known for performing with Southern gospel quartets, especially The Cathedrals.

Give My Regards to Broad Street (film): Give My Regards to Broad Street is a 1984 British musical drama film directed by Peter Webb, which starred Paul McCartney, Bryan Brown and Ringo Starr.  The film covers a fictional day in the life of Paul McCartney, who wrote the film for the screen, and McCartney, Starr and Linda McCartney all appeared as themselves.  Despite "Give My Regards to Broad Street" being unsuccessful in the box office financially and critically, its soundtrack album sold well.  The title is a take on George M. Cohan's classic show tune "Give My Regards to Broadway" which made reference to London's Broad Street railway station, which would close in 1986.

Gene McDonald: Gene McDonald is an American bass singer and was the bass vocalist for the Florida Boys southern gospel quartet from 1998-2007.

Big Fella: Big Fella is a 1937 British musical drama film directed by J. Elder Wills and starring Paul Robeson, Elisabeth Welch and Roy Emerton.  It is loosely based on the novel "Banjo" by Harlem Renaissance writer Claude McKay.

Richard Sterban: Richard Anthony Sterban (born April 24, 1943) is an American bass singer born in Camden, New Jersey, who joined the country and gospel quartet The Oak Ridge Boys in 1972.  Prior to joining The Oak Ridge Boys, Sterban toured with J. D. Sumner and the Stamps Quartet, who were singing backup for Elvis Presley at that time.  Sterban ultimately became best known for his "oom-pa-pa-oom-pa-pa-mow-mow" bass solo in the Oak Ridge Boys' 1981 single "Elvira" and sang lead vocals on a select few of the group's songs, including a cover of The Righteous Brothers' hit "Dream On," which itself became a hit.

William F. Hooley: William F. Hooley (16 April 1861 – 12 October 1918) was a British-born American bass singer and pioneer recording artist who was popular as a solo singer, as a monologist, and as a member of several of the most successful vocal groups of the early twentieth century, including The Haydn Quartet and The American Quartet.

Paul Robeson: Paul Leroy Robeson (pronounced ; April 9, 1898 – January 23, 1976) was an American bass singer and actor who became involved with the Civil Rights Movement.  At Rutgers College, he was an outstanding American football player, and then had an international career in singing, with a distinctive, powerful, deep bass voice, as well as acting in theater and movies.  He became politically involved in response to the Spanish Civil War, fascism, and social injustices.  His advocacy of anti-imperialism, affiliation with communism, and criticism of the United States government caused him to be blacklisted during the McCarthy era.

Supporting paragraphs: Big Fella Paul Robeson
Answer: Paul Robeson