Choi Si Won's portrayal of a quirky reporter adds sweet appeal to the romantic comedy "She Was Pretty." And now the Super Junior singer also adds his melodic voice to the soundtrack.

Choi's OST contribution "Only You" is a sweet romantic ballad that viewers can easily imagine his sad drama character singing.

"Only You" is the fifth song to be released for the drama soundtrack, that also includes tracks "Thumping" by Kim Min Seung, "Sometimes" by Zia, "One More Step" by Monsta X's Ki Hyun and "One More Step" by Soyou, Brother Su.

In "She Was Pretty" Choi plays Most magazine reporter Kim Shin Hyuk. His character is secretly an heir, who may one day manage Most, but none of his co-workers suspect his powerful family connections. Kim Shin Hyuk is in love with Hwang Jung Eum's character Kim Hye Jin and his comic pursuit of her has endeared him to viewers.

Choi may be best known as a member of Super Junior but he landed acting roles before he debuted with the band. He had his first leading role in 2007 when he appeared in the high school comedy "Attack of the Pin-Up Boys." He also had roles in the dramas "Oh My Lady," "Athena Goddess of War" and "The King of Dramas."

And his film career is busier this year than ever before. He appeared in three films in 2015, including the international blockbuster "Dragon Blade" with co-stars Jackie Chan, John Cusack and Adrien Brody. He also starred in the Chinese-Korean thriller "Helios" and "To The Fore," a k-movie about competing cyclists.

Choi Si Won is well liked in China where he filmed the drama "Billion Dollar Heir," which has been called the Chinese version of "The Heirs." He also appeared on the Chinese version of "We Got Married" with Chinese supermodel Liu Wen.

"Only You" is not his first soundtrack contribution, as he contributed the song "Worthless" to one of his dramas "Oh My Lady" and the song 'Don't Leave Me" to the 2014 drama "This Is Love."

What do you think of his contribution to the "She Was Pretty" soundtrack? Let us know.