The playlist is one you already know. K-Pop Club Night at Catch One is the Los Angeles night for the community that grew up on this music — DJ Chen on decks, a room that fills with people who know every chorus. Catch One is the Pico Boulevard venue with the history to hold it: one of LA's most significant dance venues, now home to the K-pop crowd that has been looking for exactly this room. The KCN Agency runs the night. The format is a DJ night built entirely around K-pop — current releases, classic hits, the full range from first-generation through fourth-generation acts. No mixing in with other …