Delta Boys

Delta Boys is a 2016 South Korean musical comedy-drama film directed by Ko Bong-soo.

Plot
Four hopeless men who live at the bottom of the social ladder get together to take part in a quartet contest.

Cast

 * Baek Seung-hwan as Kang Il-rok
 * Lee Woong-bin as Cha Ye-gun
 * Shin Min-jae as Choi Dae-yong
 * Kim Choong-gil as No Joon-se
 * Youn Ji-hye as Ji-hye