2010: OST

In 2010, Yesung starred in the title role of musical Hong Gil Dong, alongside band mate Sungmin who also played the historical figure Hong Gildong. It played at the Woori Financial Art Hall at the Olympic Park from 18 February to 18 April 2010. On 31 March 2010, Yesung contributed to the OST of television drama Cinderella's Sister, starring Moon Geun-young and Chun Jung-myung. The song, "It Has To Be You", is a ballad that tells the story about a man who refused to look for another girl, except for the one he loved. On 4 June, Yesung performed it for the first time, and his first solo stage, on Music Bank which reached #3 on show's K-Chart.

In July 2010, Yesung appeared with band mate Leeteuk as MC's for MBC's Love Pursuer. The show presents a Korean celebrity being showered with affection from a secret admirer, with the challenge of guessing who the admirer is. Yesung was himself the subject of admiration in episode 10. During the recording of Dream Team 2 on 21 August 2011, he fell from a platform and strained his waist again, but was reported to be a minor injury. On 4 September, he became the new MC for MUZIT, a musical talk show alongside K.Will and veteran composer Yoo Youngsuk. It showcased various musical talents from the Korean music industry.

From 1 October to 28 October 2010, also he starred in his third musical Spamalot playing the main role of Sir Galahad.

On 29 December 2010, Yesung together with Luna of f(x), sang the track "Loving You", on part two of the original soundtrack of KBS drama President.

2008-2009: Musical theatre

On 9 May 2008, Yesung was sent to the hospital after he injured his leg during the 70 km 24-Hour Marathon of Hope in which he and band mates Shindong, Sungmin, Leeteuk, Eunhyuk and Kangin participated. The event was in collaboration with the SBS charity program "Hope TV 24" and the money raised was donated to a Mongolian school in South Korea which was at risk of closing down. Due to the injury, Yesung was unable to complete the marathon, but appeared on stage on crutches with his fellow members. Also on 8 August, Yesung was sent to the hospital after falling from a 1.5m stage while rehearsing at the KBS music program, Music Bank. The injury aggravated old injuries from the neck and waist and was hospitalised for two days.

He sang ballad track "Love Really Hurts" for the original soundtrack of television drama Tazza, which aired from 16 September to 25 November 2008. In 2009, Yesung made his musical theatre debut in Namhansanseong (lit. South Korean Mountain Fortress), which is based on the novel of the same name by Kim Hoon, which is based on the historial incident of Byeongja Horan, at the Namhansanseong in Gyeonggi-do. But the musical focuses on the lives of common people and their spirit of survival during harsh situations. Yesung played villain "Jung Myung-soo", a servant-turned-interpreter who feels sad from being betrayed by his country, from 9 October to 4 November at the Seongnam Arts Center Opera House. On 6 November, he made a surprise appearance on KBS' Music Bank with label mates SHINee in place of Jonghyun, who was recovering from influenza, in a performance of "Ring Ding Dong".

2005-2007: Debut with Super Junior

Yesung officially debut as part of 12-member project group Super Junior 05 on 6 November 2005 on SBS's music programme Popular Songs, performing their first single, "Twins (Knock Out)”. Their debut album SuperJunior05 (Twins) was released a month later on 5 December 2005 and debuted at #3 on the monthly MIAK K-pop album charts.

In March 2006, SM Entertainment began to recruit new members for the next Super Junior generation. However, plans changed and the company declared a halt in forming future Super Junior generations. Following the addition of thirteenth member Kyuhyun, the group dropped the suffix "05" and became officially credited as Super Junior. The re-polished group's first CD single "U" was released on 7 June 2006, which was their most successful single until the release of "Sorry, Sorry" in March 2009. In the fall of 2007, the group released their second official album, Don't Don, which became Super Junior's best-selling album and Korea's second best-selling album of the year.

From September 2006 to September 2007, Yesung was host for radio program, M.I.R.A.C.L.E for You, where members of Super Junior often appeared as guests. However, before the radio show's first anniversary, Yesung left in order to concentrate on Super Junior's second album, Don't Don. The last air date for the radio show was 8 September 2007. In November 2006, Yesung, along with members Ryeowook and Kyuhyun, formed Super Junior's first subgroup, Super Junior-K.R.Y, a group specializing in R&B ballads.

In 2007 Yesung became a member of Super Junior-H. He debut as an actor on 26 July 2007 with the release of Attack on the Pin-Up Boys, a high school comedy starring fellow Super Junior members. He played the school's rock star who gets attacked by a mysterious force.

Biography

Yesung was born on August 24, 1984 in Seoul and later moved to Cheonan, South Chungcheong at age 10. He is the older son of two; his younger brother's name is Kim Jongjin. From a young age, Yesung expressed an interest in singing. In 1999, he joined a broadcast singing competition and won gold at the Cheonan Singing Competition. In 2001, Yesung's mother signed him up to audition for SM Entertainment's Starlight Casting System, in which he impressed the judges with his "artistic voice", and signed as trainee under SM Entertainment that same year.