Question: Are Marie Fredriksson and Bada both vocalists?

full_context: Document 1: The Heartland Café: The Heartland Café is an album released by Swedish pop group Gyllene Tider on 17 February 1984. The group's first recorded foray into the English language, "The Heartland Café" was the second album to feature vocalist Marie Fredriksson singing back-up and proved to be a precursor to the Swedish super-duo Roxette, which consists of Fredriksson and Gyllene Tider's lead singer, Per Gessle. The album peaked at No. 18 on the Swedish albums chart.
Document 2: Bada (singer): Choi Sung-hee (born February 28, 1980), better known as Bada or Sea, is a South Korean singer and musical actress. She is a member of South Korean girl group S.E.S.. She has released four studio albums, one mini albums and five singles. She won Best Actress at the 3rd The Musical Awards and has starred in ten musicals to date.
Document 3: Bada: Bada (stylized as bada; Korean: 바다 ) is a discontinued operating system for mobile devices (in favour of Tizen) such as smartphones and tablet computers. It was developed by Samsung Electronics. Its name is derived from "바다 (bada)", meaning "ocean" or "sea" in Korean. It ranges from mid- to high-end smartphones.
Document 4: Bae Suzy discography: Bae Suzy (; born October 10, 1994), better known by the mononym Suzy, is a South Korean singer and actress. She is a member of the girl group miss A under JYP Entertainment.
Document 5: Bae Suzy: Bae Su-ji (; born October 10, 1994), better known by the mononym Suzy, is a South Korean singer and actress. She is a member of the girl group miss A under JYP Entertainment .
Document 6: Anni-Frid Lyngstad: Anni-Frid Synni, Princess Reuss of Plauen (German: "Anni-Frid Synni, Prinzessin Reuß von Plauen" ; born Anni-Frid Synni Lyngstad, 15 November 1945), commonly known as Frida Lyngstad, or just by the mononym, Frida, is a Norwegian-born Swedish singer, songwriter, and environmentalist. Known for her warm personality, striking auburn hair and rich mezzo-soprano voice, she is best known as one of the lead singers of the Swedish pop band, ABBA.
Document 7: Robyn: Robin Miriam Carlsson (born 12 June 1979), known as Robyn, is a Swedish singer, songwriter and record producer. Robyn first came to the music scene with her 1995 debut album "Robyn Is Here" which spawned two "Billboard" Hot 100 top 10 hit singles; "Do You Know (What It Takes)" and "Show Me Love". Her second and third studio albums "My Truth" (1999) and "Don't Stop the Music" (2002) were only released in her native country. Robyn returned to international success with her fourth album "Robyn" (2005) which earned her critical acclaim and a Grammy Award nomination. The album spawned the hit singles; "Be Mine!" and the UK number one "With Every Heartbeat". In 2010 she released a trilogy consisting of three mini albums of the "Body Talk" series. The albums received widespread critical acclaim, three Grammy Award nominations and produced three top 10 hits; "Dancing On My Own", "Hang with Me" and "Indestructible". Robyn followed up with the release of two collab EPs; "Do It Again" (2014) and "Love Is Free" (2015).
Document 8: Agnetha Fältskog: Agnetha Fältskog (] , born 5 April 1950) is a Swedish musician, singer, songwriter, actress, and author. She achieved success in Sweden after the release of her debut album "Agnetha Fältskog" in 1968, and reached international stardom as a member of the pop group ABBA, which has sold over 380 million albums and singles worldwide, making them one of the best-selling music artists in history.
Document 9: Seohyun: Seo Ju-hyun (born June 28, 1991), known professionally as Seohyun, is a South Korean singer and actress. She debuted as a member of girl group Girls' Generation (and later its subgroup TTS) in August 2007, who went on to be one of the best-selling artists in South Korea and one of South Korea's most popular girl groups worldwide. Apart from her group's activities, she has established herself as an actress, notably through her participation in the original and Korean versions of stage musicals including "Moon Embracing the Sun", "Gone with the Wind" and "Mamma Mia". She also starred in the drama "". She debuted as a solo artist with her debut mini album, "Don't Say No", on January 17, 2017, making her the third Girls' Generation member to debut as a solo artist.
Document 10: Marie Fredriksson: Gun-Marie Fredriksson, known as    (born 30 May 1958), is a Swedish pop singer-songwriter and pianist, best known for forming one half of the pop rock duo Roxette, which she created together with Per Gessle in 1986. She and Gessle achieved international success from the late 1980s to the early 1990s with a total of six top 10 US hit songs such as "It Must Have Been Love," "Listen to Your Heart," "The Look," "Joyride," and "Dangerous." In 2002, after fainting at home, she was diagnosed with brain cancer. During her rehabilitation she continued to make music, resulting in the album "The Change." She later reunited with Gessle to record more Roxette albums, embarked on worldwide tour and continued to record as a solo artist in her native Sweden.
Document 11: BoA concert tours: This is a list of BoA Concert Tours by Kwon Boa (Korean: 권보아, Chinese: 權珤雅, Japanese: クォン·ボア, born November 5, 1986), commonly stylized and known by her stage name BoA, which is an acronym for Beat of Angel. She is a South Korean singer and actress active in South Korea, Japan, and the United States, who referred to as the Queen of Korean Pop.
Document 12: BoA discography: The discography of South Korean musician BoA consists of 17 studio albums, 6 compilation albums, 5 extended plays and numerous singles. BoA debuted as a musician through South Korean talent agency S.M. Entertainment at the age of 13 with the album "ID; Peace B" (2000), followed by her debut in Japan with Avex Trax in 2001.
Document 13: Bae Woo-hee: Bae Woo-hee (born November 21, 1991), better known mononym Woohee, is a South Korean singer, songwriter and actress. She is best known as a member of the South Korean girl group Dal Shabet.
Document 14: Sparvöga: Sparvöga is a 1989 single by Swedish artist Marie Fredriksson, known internationally from the duo Roxette. The single was not originally part of an album, but was written for the TV-series "Sparvöga", which in turn was based on Ann-Charlotte Alverfors's book by the same name. The single was released in March 1989, and the next month peaked at number six on the Swedish charts. As such it was Fredriksson's highest charting single ever until the release of "Där du andas" in 2008, that reached the number one spot.
Document 15: Äntligen – Marie Fredrikssons bästa 1984–2000: Äntligen – Marie Fredrikssons bästa 1984–2000 "(Finally – Marie Fredriksson's best)" is the first greatest hits album by Swedish pop singer and songwriter Marie Fredriksson. Compiled by Marie herself from some personal favourite songs and from solo singles that were released between 1984 and 1997. Two new songs were specially recorded to be included on the album, "Äntligen" and "Det som var nu" (a duet with Patrik Isaksson).
ground_truth: yes