Hong Sung Mi, known professionally as Dana, is a South Korean singer, dancer, musical actress, and member of THE GRACE (천상지희 더 그레이스). She graduated from Hanam High School and later obtained a bachelor's degree in Chinese Language from Hankuk University of Foreign Studies.

She made her debut as a solo artist in 2001 with the studio album "Dana". The following year, she was cast in the third season of the MBC sitcom "Nonstop" and also made her theatrical debut with a role in the musical "Peter Pan". After releasing her second studio album in 2003, she decided to take a break from the industry.

She re-debuted in April 2005 as THE GRACE's main vocalist with their first single, "Too Good". The group was formed by SM Entertainment (SM엔터테인먼트) as the female counterpart to TVXQ and managed to successfully debut in South Korea. Their performances were picked up by Japanese and Chinese TV stations, and they recorded all their singles in Japanese and Mandarin before officially debuting there in January and March 2006, respectively.

But, after successful tours around Asia and more releases in different languages, the group went on an indefinite hiatus in May 2010. She joined member Sunday and performed as a sub-unit DANA & SUNDAY (천상지희 다나&선데이) in 2011, releasing only one single, "One More Chance", before also going on hiatus. They have never officially disbanded, but all members are now focused on their individual activities.

She left SM in 2020 after 19 years with the company and is now without representation and back in musical theater.

(Source: kisskh) Edit Biography