Question: Are Yeo Hoon-min and John Kay both singers ?

full_context: Document 1: Moon Hee-joon: Moon Hee-joon (; or spelled Moon Hee-jun; born March 14, 1978) is a South Korean pop-rock singer-songwriter signed under SidusHQ. He initially rose to fame as the leader of former boy band H.O.T. under SM Entertainment.
Document 2: John Kay (musician): John Kay (born Joachim Fritz Krauledat, 12 April 1944, Tilsit, East Prussia, Germany, now Sovetsk, Kaliningrad Oblast, Russia) is a German-Canadian rock singer, songwriter, and guitarist known as the frontman of Steppenwolf.
Document 3: Kay Musical Instrument Company: Kay Musical Instrument Company was a musical instrument manufacturer of the United States, in operation since the 1930s until the 1960s. It was established in 1931 at Chicago, Illinois by Henry Kay Kuhrmeyer, from the assets of the former Stromberg-Voisinet, which was founded as Groeschel Mandolin Company in 1890. Kay offered their first electric guitar in 1936—five years after the Rickenbacker "Frying pan", and the same year as the Gibson ES-150. Nonetheless, Kay is considered an "electric guitar pioneer" because Kuhrmeyer bought their past company, Stromberg-Voisinet, and produced the first commercial electric guitar, the "Stromberg Electro", in 1928.
Document 4: Suho: Kim Jun-myeon (born (1991--) 22, 1991 ), better known by his stage name Suho (meaning "guardian" in Korean), is a South Korean singer and actor. He is a member and leader of the South Korean-Chinese boy group EXO and its sub-unit EXO-K.
Document 5: John Kay (spinning frame): John Kay was a clockmaker from Warrington, Lancashire, England, associated with the scandal surrounding invention of the spinning frame in 1767, an important stage in the development of textile manufacturing in the Industrial Revolution. Kay constructed the first known frame, and is one of the claimants to having been its inventor. He is sometimes confused with the unrelated John Kay who had invented the flying shuttle thirty years earlier.
Document 6: Nam Woo-hyun: Nam Woo-hyun (Hangul: 남우현 ; Hanja: 南優賢 ; born February 8, 1991), commonly known by his mononym Woohyun, is a South Korean singer and actor with the boy band Infinite. In 2016 he released a solo album.
Document 7: Eunhyuk: Lee Hyuk-jae (born April 4, 1986), better known by his stage name Eunhyuk, is a South Korean singer-songwriter and actor. He is a member of the South Korean boy group Super Junior and their subgroups, Super Junior-T and Super Junior-H. In 2011, he joined Super Junior's Mandopop subgroup, Super Junior-M and the duo Donghae & Eunhyuk; active in China and Japan respectively.
Document 8: Michael Kay (footballer): Michael Joseph Kay (born 9 December 1989 in Consett, England) is an English former footballer. He usually played in the right back position, but could also play as a central defender and has been known to fill in as a left back on occasion. He is a former England Under-17 international. He is no relation to former Sunderland defender John Kay.
Document 9: Lee Jun-ho (singer): Lee Jun-ho (; born January 25, 1990), simply known as Junho, is a South Korean singer-songwriter, dancer and actor. He is a member of the South Korean boy band 2PM.
Document 10: Steppenwolf (band): Steppenwolf is a Canadian rock band that was prominent from 1968 to 1972. The group was formed in late 1967 in Toronto by lead singer John Kay, keyboardist Goldy McJohn, and drummer Jerry Edmonton (all formerly in Jack London & The Sparrows from Oshawa, Ontario). Guitarist Michael Monarch and bass guitarist Rushton Moreve were recruited by notices placed in Los Angeles-area record and musical instrument stores.
Document 11: ₩uNo: Woo Ji-seok (Korean: 우지석 ; born May 11, 1990), commonly known as Taewoon or ₩uNo is a South Korean singer, rapper, songwriter, and record producer. He is a former member of the South Korean boy band Speed and former member of the South Korean Coed group Coed School.
Document 12: Wolftracks: Wolftracks is an album by John Kay and Steppenwolf, released in 1982 (see 1982 in music). It was originally released only in Canada and Australia. The album was the first new studio album in six years for John Kay, with a new line-up of Steppenwolf.
Document 13: Yeo Hoon-min: Yeo Hoon-min (Korean: 여훈민 ; born August 16, 1991), also known by his stage name Hoon, is a South Korean singer and actor. He is best known as a member of South Korean boy band U-KISS under NH Media. He joined the group in February 2011 after the departure of Alexander Lee Eusebio and Kim Kibum. Hoon currently attends Dongguk University, majoring in theatre and film.
Document 14: Kim Jeong-hoon: Kim Jeong-hoon (born January 20, 1980), also known in Japan as John Hoon, is a South Korean singer and actor. He initially rose to fame as a member of South Korean duo UN debuting with the single "Voice Mail" in 2000. After the duo disbanded in 2005, his fame increased as an actor starring in "Princess Hours", a drama based on a manhwa.
Document 15: Steppenwolf 7: Steppenwolf 7 is an album by the band Steppenwolf, released in 1970, and their fifth studio recording for Dunhill Records. It is the first Steppenwolf album with new bass player George Biondo. While the album featured Steppenwolf's trademark rock and roll sounds, none of the songs were able to make the top 40. The album featured a cover of Hoyt Axton's "Snowblind Friend", their second cover of one of his antidrug songs (the first being "The Pusher"). Along with "Who Needs Ya", it was one of two singles from the album which made the charts, but fell short of the top 40. The album track "Renegade" is autobiographical for lead vocalist John Kay, recounting his flight with his mother from East to West Germany in 1948.
ground_truth: yes