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KpopStarzK-Pop Workout Playlist: Gummy's 'Only One' Makes the Girl Power List Along ...KpopStarzK-Pop Workout Playlist: Gummy's 'Only One' Makes the Girl Power List Along with Songs by 2NE1 And Others. With catchy beats and upbeat messages, female K-Pop artists such as 2NE1 and Gummy provide the workout soundtrack for this week.