[2][3] Following his debut as a singer in 1999, Park released numerous hit songs in the 2000s, including "Good Person" (2002), "Snow Flower" (2004) and "Memories Resemble Love" (2007).

[4] In the 2010s, he achieved five number-one hits on the Circle Digital Chart, including 2014's "Wild Flower", which has sold 5 million copies, making it one of the best-selling singles in South Korea.

[10] The album sold more than 446,000 copies by the end of the year and garnered Park a win for Best New Artist at the 2000 Golden Disc Awards.

[11][12] That year, Park made his musical theatre debut in the lead role of Rock Hamlet, which premiered in April 2000 at Seoul's Jangchung Gymnasium.

[14] The album's lead single, "Good Person" (좋은 사람), was number one for four weeks on South Korea's Music Box Chart.

[19][20] That November, Park released "Snow Flower" (눈의 꽃), a song for the original soundtrack of the television show I'm Sorry, I Love You.

[28] In 2008, he also participated in Hwang Project as the lead vocal by releasing the song "The Castle of Zoltar," which was quite different from the music that he sang in early stage of his career.

[30] Park served 21 months in Yongsan District as an entertainment soldier as part of conscription in South Korea.

[36] This move was, however, highly controversial, as Park later faced a fraud lawsuit after reportedly taking approximately 400 million KRW worth of gifts after promising to sign an exclusive contract with another company.