Hit Your Heart is the second extended play by 4Minute. The mini-album was released on May 19, 2010. HuH was being used as the promotional song for the mini-album. The music video for "HuH" starts with their song "Who's Next" which features label mates Beast introducing 4minute, while 4minute walks in a dark background.

Members:
Jihyun
Gayoon
Jiyoon
Hyuna
Sohyun