OHAH (오아), born Oh Hyun-ah on September 20, 1996, is a South Korean singer, songwriter, and YouTuber who debuted on October 14, 2022, with the single album "Destiny" and its title track “어쩌다.” Originally from Asan, Chungcheongnam-do, she graduated from Baekseok Arts University’s Practical Music department and built her musical identity through extensive busking, both in groups and as a solo performer. She often performs with the OA Band—composed of Kim Donghyun (guitar), Jin Suyong (drums), and Lee Shinyoung (keyboard)—and is known for her distinctive stage presence, including the use of handheld percussion instruments and a signature doll adorned with a metal-wire flower. A former member of the show choir Harmonize (2017–2020), OHAH has appeared on programs such as I Can See Your Voice 6 and Hangout with Yoo, and has earned multiple major awards at national song festivals between 2020 and 2022. Her discography spans folk pop, K-indie, and alternative rock, with releases including "Fly Away"(2023), "Snowy Day"(2024), "빛날 테니까"(2025), and "Let’s Rock"(2025), reflecting her versatility and steady growth as an independent artist.