Question: Debra Byrd has worked with which singer-songwriter?

full_context: Document 1: 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.
Document 2: Paul Anka: Paul Albert Anka {'1': ", '2': ", '3': ", '4': "} (born July 30, 1941) is a Canadian-American singer, songwriter, and actor. Anka became famous during the late 1950s, 1960s, and 1970s with hit songs like "Diana", "Lonely Boy", "Put Your Head on My Shoulder", and "(You're) Having My Baby". He wrote such well-known music as the theme for "The Tonight Show Starring Johnny Carson" and one of Tom Jones's biggest hits, "She's a Lady", as well as the English lyrics on Claude François and Jacques Revaux's music, for Frank Sinatra's signature song, "My Way", which has been covered by many including Elvis Presley. He was inducted into Canada's Walk of Fame in 2005.
Document 3: Dee Does Broadway: Dee Does Broadway is the second album from Dee Snider, frontman of Twisted Sister, after 12 years without any release. It was produced by Dee, grammy winning Patti LuPone and Bebe Neuwirth. Guests in the album include the Grammy and Emmy award winning Cyndi Lauper, Clay Aiken, Nick Adams and many others.
Document 4: Mort Shuman: Mort Shuman (November 12, 1938 – November 2, 1991) was an American singer, pianist and songwriter, best known as co-writer of many 1960s rock and roll hits, including "Viva Las Vegas". He also wrote and sang many songs in French, such as "Le Lac Majeur", "Allo Papa Tango Charlie", "Sha Mi Sha", "Un Eté de Porcelaine", and "Brooklyn by the Sea" which became hits in France.
Document 5: This Is My Town: Songs of New York: This Is My Town: Songs of New York is a studio album by American singer-songwriter Barry Manilow, released on April 21, 2017 by Decca Records and Stiletto Entertainment. The album celebrates Barry Manilow's hometown New York City by "saying thanks to the city for giving me my ambition, my sense of humor and my decency", according to Manilow. It consists both of new original Manilow compositions and standards "evoking the spirit and energy of New York City".
Document 6: Johnny Mathis Sings the Music of Bacharach &amp; Kaempfert: Johnny Mathis Sings the Music of Bacharach &amp; Kaempfert
Document 7: Debra Byrd: Debra Byrd (born in Cleveland, Ohio) is an American vocalist who has worked with Barry Manilow in and after Lady Flash and Bob Dylan, appeared on Broadway, and serves as the head vocal coach for "American Idol" and "Canadian Idol", also singing backup for the contestants. Byrd has helped with vocals on the Hub Television Series "Majors and Minors".
Document 8: Robert Marks (vocal coach): Robert “Bob” Marks is an American vocal coach, music arranger, accompanist, conductor, and music director located in New York City. His students have included Natalie Portman, Britney Spears, Ariana Grande, Lea Michele, Laura Bell Bundy, Kerry Butler, Nikki M. James, Constantine Maroulis, Sarah Jessica Parker, Debbie Gibson, and Ashley Tisdale.
Document 9: Barry Gibb: Barry Alan Crompton Gibb, {'1': ", '2': ", '3': ", '4': "} (born 1 September 1946) is a singer, songwriter, musician, and record producer who rose to worldwide fame as a co-founder of the group Bee Gees, one of the most commercially successful and critically acclaimed groups in the history of popular music, with his brothers, Robin and Maurice Gibb. The three brothers also formed a songwriting partnership beginning in 1966.
Document 10: Barry Manilow: Barry Manilow (born Barry Alan Pincus; June 17, 1943) is an American singer-songwriter, arranger, musician, and producer with a career that has spanned more than 50 years. His hit recordings include "Mandy", "Can't Smile Without You", and "Copacabana (At the Copa)".
Document 11: The Greatest Love Songs of All Time: The Greatest Love Songs of All Time is an album by Barry Manilow released on January 26, 2010. The release came not too long before the start of his new show at the Paris Las Vegas hotel.
Document 12: Lady Flash: Lady Flash was an American trio of singers whose members were Lorraine Mazzola, Monica Pege and Debra Byrd. They were the featured backup group for Barry Manilow from 1974-1979 and released one hit of their own, 1976's "Street Singin'". The tune, which was written and arranged by Manilow, reached #27 on the Billboard Hot 100 record chart. The song came from their album, "Beauties In The Night" which was also produced by Manilow.
Document 13: Bobby Byrd: Bobby Howard Byrd (August 15, 1934 – September 12, 2007) was an American R&B/soul singer, songwriter, bandleader, talent scout, record producer, and musician, who played an integral and important part in the development of soul and funk music in association with James Brown. Byrd began his career in 1952 as member of the gospel group the Gospel Starlighters, who later changed their name to the Avons in 1953 and the Five Royals in 1954, before settling with the name the Flames in 1955 prior to Brown's joining the group; their agent later changed it to The Famous Flames. Byrd was the actual founder of The Flames and is credited with the discovery of James Brown. As group founder, and one of the longest-serving members of the group, Byrd was inducted into the Rock & Roll Hall of Fame posthumously in 2012. Byrd was also a 1998 recipient of the Rhythm and Blues Foundation's Pioneer Award. Byrd helped to inspire the musical aspirations of James Brown, who launched his career with Byrd.
Document 14: Kiley Dean: Kiley Dean (born April 12, 1982) is an American contemporary R&B singer. Dean was born and raised in a small town in Arkansas. When she was about 7 years old, her family decided to move to Orlando. She grew up singing in school and church, which led her to singing back-up for Britney Spears' tours, "…Baby One More Time Tour" and "Oops!... I Did It Again World Tour" as well as Madonna's tours, "MDNA Tour" and "Rebel Heart Tour."
Document 15: Kathleen Battle: Kathleen Deanna Battle (born August 13, 1948) is an American operatic soprano known for her distinctive vocal range and tone. Born in Portsmouth, Ohio, Battle initially became known for her work within the concert repertoire through performances with major orchestras during the early and mid-1970s. She made her opera debut in 1975. Battle expanded her repertoire into lyric soprano and coloratura soprano roles during the 1980s and early 1990s until her eventual dismissal from the Metropolitan Opera in 1994. After a 22-year absence from the Met, Battle performed a concert of spirituals at the Metropolitan Opera House in November 2016.
ground_truth: Barry Manilow