ONE was a boy band that first appeared in 1999, recognized as both Greece and Cyprus's very first boy band.
 The band was formed by leading Cypriot-Greek composer Giorgos Theofanous and Minos EMI A&R Manager Vangelis Yannopoulos.
 Constantinos Christoforou and Phiippos Constantinos were on board quite early, chosen by Giorgos Theofanous.
 The next three members were picked up after a selective audition that took place in legendary Athenian Sierra Studio.
 The selecting committee consisted of Natalia Germanou, Posidonas Yannopoulos, Andreas Kouris, Themis Georgandas, Theofanous and Yannopoulos.
 Demetres Koutsavlakis, Argyris Nastopoulos and Panos Tserpes were retained among 179 candidates.
 Christoforou followed a solo career in 2003, and was replaced by another Cypriot singer, Demos Beke.
 In 2005 the band formally disbanded.
 In their 6-year existence they enjoyed much commercial success and earned platinum certifications, as well as having staged memorable performances with successful Greek singers at music halls and in concerts.
The discography of Every Little Thing, a J-pop duo (former trio) formed in 1996 by Mitsuru Igarashi (synthesizer, music producer), Kaori Mochida (vocals, songwriting) and Ichiro Ito (guitar, songwriting), consists of eleven studio albums, six compilation albums, five remix albums, and numerous singles and videos, many of which were commercially successful.
 The band debuted with their single "Feel My Heart" on August 7, 1996, which peaked at number twenty-four on the Japanese Oricon charts.
 Their first number one single was "For The Moment", released on June 4, 1997.
 Their most successful year was 1998, in which they released their 8th single "Time Goes By" which topped the charts and sold more than a million copies.
 Their second studio album "Time to Destination" released that year sold more than 3.5 million copies in Japan, their best-selling album to date.
 Number one singles of the band include "Forever Yours" (1998), "Fragile" (2001), "Untitled 4 Ballads" (2002) and "Koibumi" (2004).
The Danish rock band Nephew has released five studio albums, three live albums, five EPs, one compilation album, one box set, and nineteen singles.
 The band was formed in 1996 by Simon Kvamm, Kristian Riis, Jonas Juul Jeppesen, and Søren Arnholt.
 In 1998, Jeppesen, who was until then the bassist in the band, left the band and was replaced by the current bassist Kasper Toustrup.
 That year, they proceeded to release two demo albums, "Tunes" and "Things to Do"; the demo "Downtown Europe" was released in 1999.
 In 2000, the band debuted with "Swimming Time", on the small label Martian Records.
 The album was received well by both critics and fans, but despite the band's success, the members got bored and decided to take a break.
 During their 2001 farewell concert in Germany, the band rediscovered their passion for music and decided to stay together.
 After being signed to Copenhagen Records, the band released their second studio album "USADSB" in 2004, which was very well received and is seen as their "breakthrough" album.
 It gained double platinum status in Denmark, and aside from there has been released in Japan, Germany, and Norway.
 Later in 2004, the "En Wannabe Darth Wader" single release came to be, which contains both the Danish and English versions of Nephew's song "En Wannabe Darth Vader".
Eden is a South African pop band.
 Originally made up of Jay, Paulo, Johan and Sean, the band debuted during the popular South African Aardklop Festival followed by a tour all over South Africa releasing their album "In" in 1997.
 After Sean Else left in 2006, the boy band continued as a trio.
 Since 2003, the band has released three more albums, "Point of No Return" (2003), "Eden" (2006) and "Knieë Lam" (2008), a live DVD "Live at The Mardi Gras" (2008) and a compilation album Dekade (2009).
 They are signed to Coleske Artists.
EXO is a South Korean-Chinese boy band produced by S.M. Entertainment.
 Separated into subgroups EXO-K and EXO-M, respectively performing music in Korean and Mandarin, the band debuted on April 8, 2012 with the single, "Mama".
 Prior to debut, various members of the band have modeled in music videos performed by senior S.M. Entertainment artists.
Eun Ji-won (born June 8, 1978) is a South Korean rapper, host, dancer, composer and leader of the first generation idol group SechsKies (젝스키스).
 After the group's disbandment in 2000, Eun pursued a solo career in 2001 with his first single ("A-Ha") and has mainly focused on hip-hop ever since.
 In addition to his music career, he has appeared on hit shows like "2 Days & 1 Night," "Reply 1997" and "New Journey to the West.
Imajin is an American R&B boy band that is known for their hit "Shorty (You Keep Playing With My Mind)" featuring Keith Murray.
 The group also made a version of this song with (rapper) Mr. Cheeks of the rap group The Lost Boyz.
 This single peaked at number 25 on the "Billboard" Hot 100, number 20 on Billboard's Hot R&B/Hip-Hop Songs chart and number 22 in the UK Singles Chart in 1998.
 The band was originally put together by record producer Bert Price and inspired by past boy bands such as Jackson 5, New Edition, Hi-Five, Immature, and Mint Condition.
 Original credited band members included Jamal Hampton (who was later replaced by Tony Royster, Jr.), Talib Kareem, Olamide Faison, and John Fitch.
 Faison is the younger brother of Donald Faison of the television series "Scrubs".
 Imajin credited themselves to being a true boy band and are different because each member played an instrument.
 Jamal Hampton and Tony Royster played the drums, Talib Kareem the keyboard, and Olamide Faison played the guitar while John Fitch played the bass guitar.
 After the first album, the group split and John and Olamide made a duo called JizLams.
 During the hiatus, Talib continued to produce songs for various artists such as Solange Knowles.
 Jamal Hampton changed his name to J Star while pursuing a solo career.
 The group continues to produce and sing music together as "Imajin".
SECHSKIES (pronounced as , Korean: 젝스키스 , Japanese: ジェクスキス ) is a six-member South Korean boy band in 1997.
 They are the "1st-generation K-Pop idols" and were named as one of the top boy groups in the 90's.
 Consisting of members Eun Ji-won, Lee Jai-jin, Kim Jae-duck, Kang Sung-hoon, Ko Ji-yong and Jang Su-won, the group debuted on April 15, 1997.
K-Otic,(เค-โอติค) is a Thai pop boy band consisting of five members; two of which are Thai-Japanese mixed and one who is Korean.
 The band debuted with the single, ""Ya Wai Chai"" in March 2007, releasing the premier album later in October.
Nicholas "Nicky" Wu (born October 31, 1970) is a Taiwanese singer and actor.
 He found fame in 1988 when he became a member of the boy band, Xiao Hu Dui (Little Tiger Team), performing alongside Alec Su and Julian Chen.
 The trio were extremely popular and successful in Taiwan, selling many records in the process.
 During his time with Little Tigers Team, he pursued a solo career, releasing an extensive catalogue of songs, Mandarin and Cantonese albums as a solo artist when member Julian Chen left the group to serve compulsory military service.
 Wu released his debut solo album in 1992.

Question: This boy band debuted on April 15, 1997 and consisted of a member who pursued a solo career in what year?
Answer: 2001