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.
Gentlemen's Game is the sixth Korean studio album (eleven overall) by South Korean boy band 2PM.
 The album was released on September 13, 2016, by JYP Entertainment as a celebration of their eight-year anniversary together.
Jo Kwon (Hangul: 조권, hanja: 趙權; born on August 28, 1989) is a South Korean singer, MC, actor, entertainer and leader of South Korean boy band 2AM.
Taecyeon Special: Winter Hitori or Taecyeon Special ～Winter Hitori～ is the first Japanese album of South Korean artist, Ok Taec-yeon, member of South Korean boy band 2PM.
 It was released on January 18, 2017.
Highway 101 is an American country music band founded by Paulette Carlson (lead vocals), Jack Daniels (guitar), Curtis Stone (bass guitar, mandolin) and Scott "Cactus" Moser (drums).
 With Carlson as lead vocalist, the band recorded three albums for Warner Bros.
 Records Nashville and charted ten consecutive Top Ten hits on the Hot Country Songs charts, four of which went to Number One.
 After Carlson left in 1990 to pursue a solo career, the band recorded a fourth album for Warner with Nikki Nelson on lead vocals before exiting the label.
 One album each followed on Liberty, Intersound and Free Falls Records.
 Moser, Stone, Nelson and Andy Gurley comprise the current lineup.
Son Ga-in (born September 20, 1987), better known mononymously as Gain, is a South Korean singer, actress and entertainer.
 She is best known as a member of the South Korean girl group Brown Eyed Girls and for her appearances alongside Jo Kwon from 2AM for TV shows "We Got Married" and "All My Love".
 As a solo artist she has released six EPs.
2AM (Korean: 투에이엠 ) was a South Korean boy group, that consisted of Jo Kwon, Lee Changmin, Lim Seulong and Jeong Jinwoon.
 It was one of the two subgroups split from the eleven-member boy band One Day, the other being 2PM.
 They officially debuted on July 11, 2008, on KBS's "Music Bank", performing the song "This Song".
 They won their first Mutizen at Inkigayo on February 7, 2010, with "Can't Let You Go Even If I Die".
Nichkhun Buck Horvejkul (Thai: นิชคุณ หรเวชกุล ; rtgs: "Nitchakhun Horawetchakun" ; born June 24, 1988), better known by his stage nameNichkhun (Korean: 닉쿤 ; ), is a Thai American rapper, singer, songwriter, model and actor.
 He is currently based in South Korea as a member of the South Korean boy band 2PM.
Paulette Tenae Carlson (born October 11, 1952) is a country singer-songwriter who rose to fame in the 1980s as the founder and lead vocalist for the country band Highway 101.
 With Highway 101, she charted four No. 1 hit singles, seven Top 10 hits.
 As a solo artist, she has charted five times on Hot Country Songs and recorded three studio albums.
 Her most successful solo single is "I'll Start with You", which peaked at number 21 in 1991.
The Gaon Music Chart tabulates the relative weekly popularity of songs or albums in South Korea.
 It is compiled by the Korea Music Content Industry Association and sponsored by South Korea's Ministry of Culture, Sports and Tourism, with an aim to create a national chart for South Korea similar to the "Billboard" charts of the United States and the Oricon charts of Japan.
 It started tracking sales since the beginning of 2010.
 It was officially launched in February 2010 with a launching ceremony held on 23 February 2010 at the Westin Chosun hotel in Seoul.
 The launch also included a small awarding ceremony, which awarded girl group Girls' Generation with top artist of January and boy band Super Junior with best album of 2009.
 Meanwhile, Hit single "We Fell In Love", performed by Jo Kwon of 2AM and Ga-in of Brown Eyed Girls, took the title of best weekly mobile ringtone.

Question: Who is the leader of South Korean boy band 2AM, Jo Kwon or Paulette Carlson?
Answer: Jo Kwon