The Nissi Orchestra of Manmin Central Church held the 7th "Happy Concert" on April 9th in front of Ace Twin Tower in Guro Digital Complex, in Seoul, Korea. This concert was a cultural event aimed to evangelize the Guro Digital Complex and further development of community relations. A variety of instruments attracted much attention which included the cello, flute, clarinet, viveraphone, electric violins and a brass quintet.