Shin Hye-sung

In March 2012, Shin reunited with his Shinhwa bandmates for their comeback after four years, under the management of 'Shinhwa Company'. It is a joint venture agency for members to perform as a group, of which Eric and Lee Min-woo are co-CEOs and the remaining members are shareholders. The Company manages the group as a whole, whilst members' individual activities are managed by their respective agencies. The group released their tenth studio album The Return on March 23, 2012, launched their comeback concerts 2012 Shinhwa Grand Tour: The Return throughout Asia and their first exclusive variety program Shinhwa Broadcast premiered on March 17, 2012 on cable channel JTBC.

On March 25, during the encore performance of the 2012 Shinhwa Grand Tour in Seoul: The Return, Shin injured his knee. At the start of the performance of "Yo!", he was shot up on stage but did not land safely. He ruptured his cruciate ligament and severely damaged the cartilage and ligament surrounding the meniscus, requiring surgery and six months of rest. Shin had previously ruptured his cruciate ligament again, an injury previously sustained during a concert in 2001, and had corrective surgery on his left knee but the cruciate ligament in his right knee continued to suffer damage, for which he was exempt from mandatory military service. However, he has put off surgery, but has continued treatment through the end of promotional activities for Shinhwa's tenth studio album, The Return. He performed by singing in a chair for their first music show comeback on March 29 on M! Countdown, where they performed "Venus" and "Hurt".

In June 2011, after releasing his fifth Korean studio album, The Road Not Taken, Shin wrapped up a series of performances in Seoul, Busan, and Shanghai. He also hosted a special two-day, 2011 Tour in Seoul - The Road Not Taken Act II, at Kyung Hee University on September 3 and 4. Then in July, he recorded a duet "I Believe," with Shunsuke Kiyokiba former member of Exile.

Shin debuted as a solo artist in 2005 with the release of his solo album entitled Love of May (오월지련, 五月之戀) in 2005. This album ranked number one on the HMV pre-order sales chart in Japan in February 2005, with 180,000 copies sold. Shin released his second album, entitled The Beginning, New Days on August 8, 2007. His song, "First Person", was #1 on the K-pop Top 10 chart. His album sold 30,000 copies on its first day of release and 50,000 copies in a week.

Shin auditioned in America through Brothers Entertainment and joined Shinhwa after bandmates Andy and Eric. He officially debuted as part of Shinhwa on March 24, 1998 with a performance of their first single "해결사" (The Solver) on KM Music Tank. Since then, he has released thirteen Korean and one Japanese studio albums with Shinhwa.

Shin Hye-sung (Korean: 신혜성 ; Hanja: 申彗星 (born Jung Pil-kyo Korean: 정필교 ; Hanja: 鄭弼敎 ; November 27, 1979) is a South Korean singer-songwriter. He is best known as a member of the South Korean boy group Shinhwa. The main vocalist of Shinhwa, he debuted as a solo artist in 2005 and has since released multiple albums in both Korean and Japanese.