Question: Were Maurice White and Carol Decker both singers?

full_context: Document 1: Melanie C: Melanie Jayne Chisholm (born 12 January 1974), better known as Melanie C or Mel C, is an English singer, songwriter, entrepreneur, actress and television personality. She is one of the five members of the Spice Girls, in which she was nicknamed Sporty Spice and with whom she sold over 85 million records worldwide. Melanie C began her solo career in late 1998 by singing with Canadian rock singer Bryan Adams on the song "When You're Gone". Her solo debut album "Northern Star" was released in 1999 and reached number four on the UK Albums Chart and was certified triple Platinum by the British Phonographic Industry (BPI). It produced four top fives and a top twenty single, two of which reached the number-one spot in the UK. Chisholm's second album, "Reason", was released in March 2003 and sold more than 500,000 copies. The album reached number five in the UK and produced one top ten, one top twenty and a double A sided top thirty single.
Document 2: Belinda Carlisle: Belinda Jo Carlisle (born August 17, 1958) is an American singer and songwriter. She gained worldwide fame as the lead vocalist of The Go-Go's, one of the most successful all-female bands of all time, and went on to have a prolific career as a solo act.
Document 3: Philip Bailey: Philip Irvin Bailey (born May 8, 1951) is an American R&B, soul, gospel and funk singer, songwriter, percussionist and actor, best known as an original member, and one of the two lead singers (along with group founder Maurice White) of the band Earth, Wind & Fire. Noted for his four-octave vocal range and distinctive falsetto register, Bailey has won seven Grammy Awards. He was inducted into the Rock and Roll Hall of Fame and the Vocal Group Hall of Fame as a member of Earth, Wind & Fire. Bailey was also inducted into the Songwriters Hall of Fame for his work with the band.
Document 4: Dina Carroll: Dina Carroll (born Geraldine Carroll, 21 August 1968) is an English singer of Scottish and African American heritage. She had a string of hits during the 1990s, including the UK top ten hits, "It's Too Late" (1991), "Don't Be a Stranger" (1993), "The Perfect Year", (1993), and "Escaping" (1996). Her first two albums, "So Close" (1993), and "Only Human" (1996), both reached number two on the UK Albums Chart and went platinum. She won Best British Female Solo Artist at the 1994 Brit Awards.
Document 5: Maurice Gibb: Maurice Ernest Gibb, CBE ( ; 22 December 1949 – 12 January 2003) was a singer, songwriter, multi-instrumenatalist and record producer, who achieved fame as a member of the pop group the Bee Gees. Although his brothers Barry and Robin Gibb were the group's main lead singers, most of their albums included at least one or two compositions by Maurice, including "Lay It on Me", "Country Woman" and "On Time". The Bee Gees were one of the most successful rock-pop groups ever. Gibb's role in the group focused on melody and arrangements, providing backing vocal harmony and playing a variety of instruments.
Document 6: Smokey Robinson: William "Smokey" Robinson Jr. (born February 19, 1940) is an American singer, songwriter, record producer, and former record executive. Robinson was the founder and front man of the Motown vocal group the Miracles, for which he also served as the group's chief songwriter and producer. Robinson led the group from its 1955 origins as the Five Chimes until 1972 when he announced a retirement from the group to focus on his role as Motown's vice president.
Document 7: Heart and Soul (T'Pau song): "Heart and Soul" is a song by British pop band T'Pau. Featuring vocalist Carol Decker performing overlapping lyrics, the song was released as the group's first single in 1987 from their debut album "Bridge of Spies". Following its inclusion in a Pepe Jeans advert, the single reached No. 4 in both the US and UK charts.
Document 8: Maurice Gibb: Maurice Ernest Gibb, CBE ( ; 22 December 1949 – 12 January 2003) was a singer, songwriter, multi-instrumenatalist and record producer, who achieved fame as a member of the pop group the Bee Gees. Although his brothers Barry and Robin Gibb were the group's main lead singers, most of their albums included at least one or two compositions by Maurice, including "Lay It on Me", "Country Woman" and "On Time". The Bee Gees were one of the most successful rock-pop groups ever. Gibb's role in the group focused on melody and arrangements, providing backing vocal harmony and playing a variety of instruments.
Document 9: Maurice Hines: Maurice Hines (born December 13, 1943) is an American actor, director, singer, and choreographer. He is the brother of dancer Gregory Hines.
Document 10: Carol Decker: Carol Ann Decker (born 10 September 1957) is an English musician. She is best known as the singer and front woman for the band T'Pau, which had international success in the late 1980s. Although Decker's music is mainly associated with the group, she also released "One Heart," a solo single in 1995, to support the centenary of the Halifax World Cup Rugby League
Document 11: Just Dream: "Just Dream" is a song by English vocalist Carol Decker of the band T'Pau, released as a non-album download-only single in 2007. It was written by Decker and T'Pau's ex-rhythm guitarist Ron Rogers. The song was produced by Decker, Rogers and Jez Ashurst.
Document 12: Maurice White: Maurice "Moe" White (December 19, 1941 – February 4, 2016) was an American singer-songwriter, musician, record producer, arranger, and bandleader. He was the founder of the band Earth, Wind & Fire. He was also the older brother of current Earth, Wind & Fire member Verdine White, and former member Fred White. He served as the band's main songwriter and record producer, and was co-lead singer along with Philip Bailey.
Document 13: Maurice White (album): Maurice White is a 1985 album by American singer and musician Maurice White released on Columbia Records. Released on April 18, 1985, The album went to number 12 on the Top R&B/Hip-Hop Albums Charts. The single "Stand by Me" a cover of the Ben E. King classic reached number 6 on the Hot R&B/Hip-Hop Singles & Tracks and number 11 on the Adult Contemporary charts. Filipino singer Gary Valenciano covered Maurice White's "Stand By Me" from his 2008 album "Rebirth".
Document 14: Touch the World: Touch the World is the fourteenth studio album by Earth, Wind & Fire, produced by the band's leader Maurice White for Kalimba Productions, and released in 1987 on Columbia Records. "Touch the World" has been certified gold in the US for sales of over 500,000 copies by the RIAA. "Touch The World" also marked the debut of former Commodores guitarist Sheldon Reynolds to the lineup. The album ended a four-year hiatus for the band, with vocalists Maurice White and Philip Bailey reforming the group, bringing back longtime members Verdine White, Andrew Woolfolk and Ralph Johnson. Drummer Sonny Emory filled the drum chair vacated by Fred White.
Document 15: T'Pau (band): T'Pau is a British pop group led by singer Carol Decker. They had a string of Top 40 hits in the UK in the late 1980s, most notably "China in Your Hand", "Heart and Soul" and "Valentine", and several hits in Europe, before disbanding in the early 1990s. Decker still performs under the name T'Pau at solo shows and 1980s nostalgia concerts, and in 2013 she reunited with original bandmember and co-songwriter Ronnie Rogers for a 25th anniversary UK tour.
ground_truth: yes