Get To Know B1A4’s Main Vocalist, Sandeul: Profile, Solo Debut, and More


Let’s Get To Know B1A4’s Handsome Main Vocalist, Sandeul

Lee Jung-hwan was born March on 20, 1992, in Busan, South Korea. He better known by his stage name, Sandeul, and is a South Korean singer. He is a member of the boy-group B1A4, which debuted on April 23, 2011. He also debuted as a solo artist on October 4, 2016.

Lee Jung-hwan or Sandeul was known to have competed in numerous singing contests prior to training and debut. Lee Jung-hwan was approached by a company agent after performing a song by Kim Yeon-woo in a talent show. He then underwent a training period of two years.

In this article, Channel-Korea will tell you everything about B1A4’s Sandeul. We have his profile, facts, career, friendship with BTS’ Jin, and much more. Keep reading and don’t miss this article! 

B1A4’s Sandeul Full Profile and Facts


Korean Area

Stage Name: Sandeul (산들)
Birth Name: Lee Jung-hwan  (이정환)
Position: Main Vocalist
Birthday: March 20, 1992, in Busan, South Korea
Zodiac Sign: Pisces
Height: 175 cm (5’9″)
Weight: 62 kg (136 lbs)
Blood Type: A
Twitter: @sandeul920320
Instagram: @sandoriganatanatda

Facts About Sandeul

Daebak News
  • He has an older sister.
  • If B1A4 were a family, he and Baro would be the older siblings.
  • His laptop wallpaper is set to Gongchan’s picture.
  • He likes to swim and to cook.
  • Is known for his cute eye smiles.
  • He was the fourth member to be recruited.
  • In October, 2016, Sandeul debuted as a solo artist with the extended play “Stay As You Are”.
  • Sandeul is friends with BTS’s Jin. They even went to an amusement park together.
  • Sandeul is close friends with Day6‘s Sungjin, they went to school together back in Busan.
  • Sandeul is also close with VIXX’s Ken.
  • Moonbyul from Mamamoo said that the 92-liners have a group chat. It includes BTS‘s Jin, VIXX‘s Ken, B1A4‘s Sanduel & Baro and EXID‘s Hani. (Weekly Idol ep. 345)
  • Sandeul’s ideal type is a woman who gives all her best in her work.

Debut as B1A4 Member

After years of training, Sandeul joined B1A4 as the main vocalist. On April 11, 2011, WM Entertainment unveiled Sandeul as the fourth member to be revealed after the release of the news of B1A4 along with Jinyoung, Baro and Gongchan. CNU was revealed the next day.

On April 20, 2011, B1A4 released their debut track, “OK” and the mini album “Let’s Fly”, and made their debut on April 23, 2011, on MBC’s Show! Music Core. After their debut, B1A4 was invited to star in MTV’s reality show Match Up with Block B. As one of the projects for the show, B1A4 filmed a music video for “Only Learnt The Bad Things.”

Sandeul’s Solo Activity

In June 2014, he appeared in the first stationary (7 gourmets). Along with Seo Kyung-seok , Shin Sung-woo , Lee Yun- seok , and Kim Yoo-jung , he went on a trip to China. The mountains are bright and hopeful Idol ‘character came out. Secure some good rice cakes, such as scorpion food and poppins. In 2015, he appeared four times in the Lunar New Year special show. Mystery Music Show King of Mask Singer, Idol Star Athletics Championships , Game of Thrones. The game of subordinates and thrones is completely invisible, and the masked king is not so far, but the amount is different compared to the two programs mentioned above. In the game of throne, There was only a scene of reacting to a smile or other people’s words, and on the side of the high school, only one scene of jumping high succeeded in jumping.

In February, he appeared in an enduring masterpiece in a year, following the already featured feature. The details of the king’s king are described in the words of ‘song singing’.
He also appeared in the Dream Team Briquette Delivery Special, which aired in mid-March. In duet song festival, he really showed the appearance of a king. Duet partner Chosun Young. As a result, it was the best record for the duet song festival with five wins in eight appearances. He was also selected as a duet for a second week in a row. And this record became the record that could never be passed as the honorary graduation system was established in 23 times. These records also have their own skills, but The synergy of the masked king also seemed to have worked greatly.

Sandeul Said BTS ‘Jin Makes Him Surprised When They Meet for the Second Times

B1A4 and Bangtan Boys (BTS) fans certainly knew that Sandeul and Jin are close friends. Together with VIXX’s Ken, the three idols, who were all born in 1992, often show their closeness and hang out together. Sandeul broadcasts “Starry Night” on July 9. On this occasion, Sandeul discussed his friendship with another popular idol, Bangtan Boys’ Jin. Sandeul and Jin are friends because they were both born in 1992. There is a group of idols born in 1992 who are close friends, which is B1A4’s Sandeul, Jin, and Baro, VIXX ‘Ken, EXID’s Hani and also Mamamoo’s Moonbyul.

Sandeul also discussed about the early days he knew Bangtan Boys’ Jin. It turns out there is a funny and surprising thing that happened between them when both were not yet familiar and close to each other like now. Sandeul said, “When I met Jin, that was very surprising. Around the second time we met, it was the end of the performance with many singers on stage.” Sandeul then continued, “Jin suddenly came and held my stomach. We were not even as close as we were at the first meeting. (At that time) we just said hello. Because it was only the second meeting and he held my stomach, I was surprised by what he was doing,” said Sandeul.

Next Sandeul also tried to ask Jin about his surprising attitude at the second meeting. Hilariously, Jin replied that he did it because he really wanted to do it. Jin doesn’t even realize he’s done it and he likes it so he keeps doing it. “After that, I thought, this is how Jin started friendship. Making him do it and I finally did the same thing,” said Sandeul. “Now this is a natural thing for us and we can get closer,” said Sandeul.

Meanwhile, Sandeul himself recently made his fans worry because he expressed frustration over the B1A4 situation. It is known that Jinyoung and Baro decided not to renew the contract with the agency so that it has now resigned. B1A4 left only three members who would do promotions as a group.

Sandeul’s Full Discography


Extended play

  • Stay As You Are (October, 2016)
  • One Fine Day (June, 2019)


  • “Stay As You Are” – From Stay As You Are Album (2016)
  • “One Fine Day” – From One Fine Day Album (2019)
  • “Hey” (feat. Wheein of Mamamoo) – From Stay As You Are Album (2016)
  • “Oppa” (with Yoo Seung-woo) – (2017)
  • “Because We Are Connected” (with Yoseob & Jung Seung-hwan) – (2018)
  • “Love, Always You” (with B1A4’s Gongchan) – From One Fine Day Album (2019)
  • “Pick Up” (Primary feat. Sandeul (B1A4)) – (2017)
  • “Home” – From Stay As You Are Album (2016)
  • “The Way With You” –
  • From Stay As You Are Album (2016)
  • “Because It Hurts” – (2014), God’s Gift: 14 Days OST
  • “Swallowing My Heart” – (2016), Love in the Moonlight OST
  • “One More Step” – (2017), Introverted Boss OST
  • “Tell Me” – (2017), Manhole OST
  • “Other World” – (2018), Bad Guys: City of Evil OST
  • “Here I Am” – (2018), Lovely Horribly OST
  • “Fly High” (날아올라) – (2019), The Secret Life of My Secretary OST

Production & songwriting credits

Year Album Artist Song Lyrics Music
Credited With/other Credited With/other
2016 Stay As You Are Sandeul “My Childhood Story” Yes No Yook Joong Wan
“Ya!”(feat. Wheein) Yes RWAM & Moon Min-seok Yes RWAM & Moon Minseok
2017 Rollin’ B1A4 “Like A Child” Yes Team Columbus & Baro Yes Team Columbus
2018 5 “Humming Bird” Yes Team Columbus & SoichiroK Yes Team Columbus
2019 One Fine Day Sandeul “This Love” Yes Yes Antti Hynninen & Will Church
“Love, Always You”(with Gongchan) Yes Moon Jung-kyu & Kim Jun-seop No Moon Jung-kyu & Kim Jun-seop
“I’m Fine” Yes Team Columbus Yes Team Columbus

Sandeul’s Filmography


Television dramas

  • 2015: Naver TV Cast Loss: Time: Life – Min-soo


Year Title Role
2015 2015 Dream Concert
Guest Role

TV Show

Year Title # Role
2019 D+B1A4 2
Regular Member
2019 Kiss 4
Regular Member
2018 Guess My Next Move 6
(Ep. 5)
2018 My Friend’s Blind Date 6
Main Host
2018 The Future Diary 16
(Eps. 9-10)
2018 Unexpected Q 25
(Eps. 13, 18)
2017 Park Jin Young’s Party People 12
2017 2017 Idol Star Athletics Championships 2
Regular Member
2016 Life Bar 150
(Ep. 87)
2016 Yang and Nam Show 7
2016 Idol Chef King 2
Regular Member
2016 Duet Song Festival: Season 1 47
[Performer](Eps. 4-5, 7-10, 16-17, 27-28)
2016 Law of the Jungle in Tonga 9
1st Half
2015 Knowing Bros 200
(Ep. 93)
2015 2015 Idol Star Athletics Championships Chuseok Special 2
Regular Member
2015 China and South Korea Dream Team 10
(Ep. 2)
Regular Member
2015 A Song For You 4 14
2015 King of Mask Singer 250
Panelist (Pilot, Eps. 3-22, 25-30, 35-38, 51-52, 55–56, 61–62, 65–66, 145-146) Contestant (Eps.1-2)
Regular Member
2015 4 Things Show: Season 2 23
(Ep. 20)
2014 B1A4 One Fine Day 8
Main Host
2014 A Song For You 3 24
(Eps. 4, 24)
2014 Abnormal Summit: Season 1 102
(Ep. 90)
2012 Hidden Singer: Season 1 17
[Panelist] (Ep. 10)
2012 2012 Idol Star Olympics Championships 2
Regular Member
2012 B1A4’s Hello Baby 12
Regular Member
2012 B1A4 Sesame Player 9
Regular Member
2012 2012 Idol Star Athletics – Swimming Championships 2
Regular Member
2011 2011 Idol Star Athletics Championships 2
Regular Member
2011 Weekly Idol 415
(Ep . 26, 40, 73, 97, 135, 159, 322)
2010 Hello Counselor 450
2009 Let’s Go! Dream Team Season 2 336
2009 You Hee Yeol’s Sketchbook 500
(Eps. 190, 220, 237, 359)

Sandeul’s Musical Theater
Year Title Role
2012 Brothers Were Brave Lee Joong-bong
2013 The Thousandth Man Kim Eung-suk
2014 All Shook Up Elvis
2015 Cinderella Prince Christopher
2016 The Three Musketeers d’Artagnan
2017 Thirty Something young Hyun-sik
2018 Iron Mask King Louis XIV/Philippe

B1A4: From 5 Members to 3 Members


The fifth contract for B1A4 boy group with WM Entertainment actually ended on April 23, 2018 but was extended to June 30, 2018. But after June 30, 2018, two members of B1A4 Jinyoung and Baro, decided not to renew their contract and left WM Entertainment. At this time automatically the remaining B1A4 members are only Sandeul, CNU, and Gongchan. So what will happen to the group that popularized the songs “O.K” and “Lonely”?

“We respect Jinyoung and Baro’s choice to live their own careers to achieve their dreams. Regarding their decision to start a new career, we also support their steps,” said WM Entertainment’s representative.

Regarding the future of boy group B1A4, the agency ensures that this group will continue. “We will focus our energy on restructuring B1A4. We will have a discussion to determine the direction of future activities with the remaining group members before making another decision,” notify the agency representative again. “Going forward, we will provide wholehearted support and do our best for the development of the careers of CNU, Sandeul and Gongchan. We will even do better for fans who have supported B1A4 unconditionally,” the agency added.

The agency also apologized to fans who might be worried by this news. “We ask that you continue to love them as usual and pray for B1A4 personnel who are now standing at the new starting line,” he said.