A few k-drama actors are not satisfied with merely starring in dramas and films. They also like to perform in musicals.

Since some started out as singers, that only makes sense, but a few who never had a singing career also like to perform on a stage.

Ji Chang Wook, who plays the Emperor in "Empress Ki," began his acting career in musicals and apparently still enjoys them. In 2013, besides readying himself for a leading role in the 50-episode historical drama, he also took part in three musicals: "The Days," "Jack the Ripper" and "Brothers Were Brave."

Kang Ha Neul, who recently played the unhappy Lee Hyo Shin in "The Heirs," is only 23 but he has been in almost a dozen musical theater productions, including "Spring Awakening" and "Assassins."

Joo Won is an actor who can't seem to stop working. In 2013, he starred in the dramas "Level 7 Civil Servant" and "The Good Doctor." He also filmed the movie "Catch Me" and took some time to perform in the musical theater adaptation of the film "Ghost." He has been in five other musicals in the last six years, including "Altar Boyz" and "Grease."

Jo Jung Suk, who was in the weekend drama "You're The Best Lee Soon Shin" and the film "The Face Reader," has done 25 musicals in his career. The 33-year-old has appeared in "Grease," "The Island" and also "Spring Awakening." He debuted in "The Nutcracker."

Lee Sun Kyun, who is currently starring in "Miss Korea" and played the bossy chef in "Pasta," debuted in "Rocky" and later appeared in "Grease." He was last seen on stage with his wife actress Jeon Hye Jin in the play "Love, Love, Love."

Lee Ha Nui, who is also known as Lee Honey, took a turn in the musical "Legally Blonde" before appearing in the comedies "Pasta," "To The Beautiful You," and playing Kim Nam Gil's secretary in the melodrama "Shark."

Park Gun Hyung, who played the doctor in "I Do I Do" and Moon Geun Young's half brother in "Goddess of Fire: Jeonji," has enjoyed a long career in musical theater. He had his fifteenth performance last year in the musical "The Scarlet Pimpernel."

Shin Sung Rok, who plays the villain in "You Who Came From The Stars," has a long career of musical performances, the most recent of which was in "Monte Cristo." And he does not always play a bad guy.