Jung Yoon Hye

Seungah debuted as a member of Rainbow on November 12, 2009 with the group's first mini album Gossip Girl. On October 28, 2016, DSP Media announced that Rainbow would be disbanding after seven years of activities after all of the members decided not to renew their contracts with the agency. Sometime in 2018, she signed on with Saebom Entertainment.

In 2019, Rainbow reformed to celebrate their tenth-anniversary since debut with the special single album "Over the Rainbow".