Question: American nightclub comedian, singer, actor, and producer, Danny Thomas, is of many entertainers to debut at a New York City nightclub which influenced which singer's song "Copacabana"?

Context paragraphs:
Riobamba (nightclub): Riobamba was a New York City nightclub.  Operating from 1942 to 1944, it was closely associated with singer Frank Sinatra, who made his solo nightclub debut there in 1943.

Santos Party House: Santos Party House was a New York City nightclub located at 96 Lafayette Street between Walker and White Streets in the TriBeCa neighborhood of downtown Manhattan.  Originally named the "Lafayette Street Jungle Gym", Santos Party House was recognized as the "Best New Nightclub" by "Paper" magazine's Annual Nightlife Awards, and has also won awards for its parties, sound system, lighting, and dance floor.

Gene Baylos: Gene Baylos (November 16, 1906 – January 10, 2005) was a nightclub comedian.  Not widely known by the general public, Baylos was a favourite of many "celebrity" comedians in New York City.  A modest success on television, he performed his stand-up routine on variety shows, including "The Hollywood Palace" and "The Joey Bishop Show".  Baylos appeared with small roles on "The Dick Van Dyke Show" and "Car 54, Where Are You? ".

Andre Charles (artist): Andre Pierre Charles (born 1968) is an American artist born in Brooklyn, New York and raised in the Bronx.  Charles is best known as a 1980s pioneer of the New York City graffiti art movement and for his influence on New York City nightclub and youth culture.

Doug Weston: Alexander Douglas "Doug" Weston (December 13, 1926 in Manhattan, New York – February 14, 1999 in Los Angeles, California) was an American nightclub owner., known as the owner of The Troubadour nightclub in Los Angeles, California, United States, which in the 1960s and 1970s was particularly responsible for promoting many successful singer-songwriters in the early stages of their careers.

Danny Thomas: Amos Muzyad Yakhoob Kairouz (January 6, 1912 – February 6, 1991), known professionally by his stage name Danny Thomas, was an American nightclub comedian, singer, actor, and producer, whose career spanned five decades.  He created and starred in one of the most successful and long running situation comedies in the history of American network television.  In addition to guest roles on many of the comedy, talk and musical variety programs of his time, his legacy includes a lifelong dedication to fundraising for charity.

Xenon (nightclub): Xenon was a popular New York City nightclub.  Xenon was a popular disco in Manhattan in the late 1970s and early 1980s.  It was located at 124 West 43rd St in the former Henry Miller Theater which prior to Xenon had been renamed Avon-at-the-Hudson and was operating as a porn house.  Xenon was the only nightclub popular enough to compete with Studio 54.  The site is now the Stephen Sondheim Theater.

Morty Gunty: Morty Gunty (February 1, 1929 – July 15, 1984) was an American actor and comedian well known among New York City nightclub comics in the 1960s and 1970s.  Gunty appeared on "The Ed Sullivan Show" on February 23, 1964, following the Beatles after their third and final appearance on the program.  He was born and died in Brooklyn, New York.

Stella (comedy group): Stella is a comedy trio consisting of Michael Showalter, Michael Ian Black, and David Wain.  The group formed in 1997 as a weekly nightclub comedy attraction, performing at New York City nightclub Fez from 1997 until the club's closing in February 2005.  Stella soon gained a wider cult following after a series of self-produced shorts were released in limited quantities on DVD.  Now known for their unique blend of potently mainstream comedy and surrealist humor, Stella has garnered a small but dedicated fanbase.

Copacabana (nightclub): The Copacabana is a New York City nightclub.  Many entertainers such as Danny Thomas, Pat Cooper and the comedy team of Martin and Lewis, made their New York debuts at the Copacabana.  The Barry Manilow song "Copacabana" (1978) is named after the club.

Supporting paragraphs: Copacabana (nightclub) Danny Thomas
Answer: Barry Manilow