Go Go 70's
고고70 (original)
Even in the 1970s, often considered by many to be the dark age for democracy and culture, the free spirit of art blossomed. Sang-gyu is a vocalist who makes a living by singing country songs at a small club near the U.S military base in Daegu. One day, fate brings Sang-gyu to Man-sik whose soulful guitar sound entrances Sang-gyu immediately. Two men recognizes the same fiery passion for music in the other's eye and together they form a six-persons band Devils.
Starring Cho Seung-woo, Shin Min-a, Cha Seung-Woo, Lee Sung-min, Kim Min-gyu, Kwang-Ho Hong, Lee Jeong-eun, Lee Jong-yoon, Kim Jae-rok, Song Sam-dong
Watch "Go Go 70's" on Tubi TV released in 2008. It's a comedy and music movie, and has a rating of 6.8 out of 10 from Imdb which is usually fine for this kind of movie, and is currently available to watch for free.