Lauper was born at Boulevard Hospital in Astoria, Queens, New York City, to a Catholic family. Her father, Fred, was of German and Swiss descent. Her mother, Catrine (nee Gallo), is Italian American (from Sicily). Lauper's siblings are younger brother Fred (nicknamed Butch), and older sister, Ellen. Lauper's parents divorced when she was five. Her mother remarried and divorced again. Lauper grew up in the Ozone Park neighborhood of Queens and, as a child, listened to such artists as The Beatles, Ella Fitzgerald, Judy Garland and Billie Holiday. At age 12, she began writing songs and playing an acoustic guitar given to her by her sister. Lauper expressed herself with a variety of hair colors, eccentric clothing and even took a friend's advice to spell her name as "Cyndi" rather than "Cindy". Lauper went to Richmond Hill High School, but was expelled, although she later earned her GED. She left home at 17, to escape her abusive stepfather, intending to study art. Her journey took her to Canada, where she spent two weeks in the woods with her dog Sparkle, trying to find herself. She eventually traveled to Vermont, where she took art classes at Johnson State College and supported herself working odd jobs. In the early 1970s, Lauper performed as a vocalist with various cover bands. One, called Doc West, covered disco songs as well as Janis Joplin. A later band, Flyer, was active in the New York metropolitan area, singing hits by bands including Bad Company, Jefferson Airplane and Led Zeppelin. Although Lauper was performing on stage, she was not happy singing covers. In 1977, Lauper damaged her vocal cords and took a year off from singing. She was told by doctors that she would never sing again, but regained her voice with the help of vocal coach Katie Agresta. In 1978, Lauper met saxophone player John Turi through her manager Ted Rosenblatt. Turi and Lauper formed a band named Blue Angel and recorded a demo tape of original music. Steve Massarsky, manager of The Allman Brothers Band, heard the tape and liked Lauper's voice. He bought Blue Angel's contract for $5,000 and became their manager. Lauper received recording offers as a solo artist, but held out, wanting the band to be included in any deal she made. Blue Angel was eventually signed by Polydor Records and released a self-titled album on the label in 1980. Lauper hated the album cover, saying that it made her look like Big Bird, but Rolling Stone magazine later included it as one of the 100 best new wave album covers (2003). Despite critical acclaim, the album sold poorly ("It went lead", as Lauper later joked) and the band broke up. The members of Blue Angel had a falling-out with Massarsky and fired him as their manager. He later filed an $80,000 suit against them, which forced Lauper into bankruptcy. After this Lauper temporarily lost her voice due to an inverted cyst in her vocal cord. After Blue Angel broke up, Lauper spent time, due to her financial problems, working in retail stores, waitressing at IHOP (which she quit after being demoted to hostess when the manager made a pass at her), and singing in local clubs. Her most frequent gigs were at El Sombrero. Music critics who saw Lauper perform with Blue Angel believed she had star potential due to her four-octave singing range. In 1981, while singing in a local New York bar, Lauper met David Wolff, who took over as her manager and had her sign a recording contract with Portrait Records, a subsidiary of Epic Records. On November 19, 1997, Lauper gave birth to her son Declyn Wallace Thornton. Her fifth album, Sisters of Avalon, was released in Japan in 1996 and elsewhere in 1997. The album was written and produced with the help of Jan Pulsford (Lauper's keyboard player) and producer Mark Saunders. As in Hat Full of Stars, some of the songs in Sisters of Avalon addressed dark themes. The song "Ballad of Cleo and Joe" addressed the complications of a drag queen's double life. The song "Say a Prayer" was written for a friend of hers who had died from AIDS. "Unhook the Stars" was used in the movie of the same name. Again without support from her label, the release failed in America, spending a single week on the Billboard album chart at No. 188. This album also met with much critical praise, including People magazine, which declared it "90s nourishment for body and soul. Lauper sets a scene, makes us care, gives us hope." In November 1998, Lauper released the Christmas album Merry Christmas...Have a Nice Life. The album contained both original material and standards, and was co-produced and mixed by William Wittman. On January 17, 1999, Lauper appeared as an animated version of herself in The Simpsons episode "Wild Barts Can't Be Broken", singing the National Anthem to the melody of "Girls Just Want to Have Fun". In the same year, Lauper opened for Cher's Do You Believe? Tour alongside Wild Orchid. She also appeared in the films Mrs. Parker and the Vicious Circle and The Opportunists. Lauper contributed a cover version of The Trammps' "Disco Inferno" to the soundtrack for the film A Night at the Roxbury. The song was also released as an EP and earned Lauper a nomination 1999 Grammy Awards for Best Dance Recording. In 2000, Lauper contributed the song "I Want a Mom That Will Last Forever" to the children's movie Rugrats in Paris. The song was written with Mark Mothersbaugh (DEVO). In 2000, Lauper also co-wrote the song "If You Believe" with Faye Tozer of the British pop group Steps, for the band's third studio album, Buzz. CANNOTANSWER

Answer this question "What was Sisters of Avalon?" by extracting the answer from the text above.

Her fifth album, Sisters of Avalon, was released in Japan in 1996 and elsewhere in 1997.