He majored in Dance at Korea National University of Arts, but dropped out to pursue a career in singing.

Before taking part in the show, he shaved his head, stating in an interview that he wouldn't let his hair grow until he achieved his dream of becoming a singer.

[3] Taegoon joined Logi Entertainment and made his debut in January 2009 after failing hundreds of auditions.

The song was moderately successful, and Taegoon received countless endorsement offers, which is rare for a new singer.

He also had to control the amounts of sleep he got, his diet, and the time he spent rehearsing and report back to Wheesung daily.

In March 2009, shortly before releasing his second mini album Rising Star, Taegoon held a showcase and fan meeting in Bangkok, Thailand.

In July 2009, Taegoon began his foray into Japan by holding his first fan meeting and mini concert in Tokyo which sold out, despite the fact that he had never previously released music or performed there before.

Shortly before the release of his third mini album, Taegoon held a special event for his Japanese fans and spent one night and two days with them at Mount Fuji in Japan.

After returning to Korea he released the third mini album and began promoting the single 속았다 (Betrayed) (Narration Of 이요원) on September 17, 2009.

In April 2010 it was announced that Taegoon would begin his acting career by starring in the movie Piano Above the Sea.