Trouble Maker (트러블메이커) is a South Korean co-ed sub-unit consisting of 4minute’s Kim HyunA (현아) & B2ST’s Jang Hyun Seung (장현승), also known as JS. The group's debut single, Trouble Maker, peaked at #1 on GaOn, Korea's official chart, and achieved a triple crown on MNet's M! Countdown and one win on SBS's Inkigayo and jTBC's Music on Top respectively. Their second mini album, Chemistry, peaked at #1 on Hanteo's Daily Album Chart and the title track, 내일은 없어 ("Now"), charted at #1 on 11 different charts, including Billboard's K-Pop Hot 100 and GaOn's Singles Chart.

Read more about Trouble Maker on Last.fm.


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