Jung Whee-in, known professionally as Whee In, is a South Korean singer under With Us Entertainment. She is a member of the girl group MAMAMOO. In 2017, her song Anymore with Jung Key topped the Gaon Charts. In April 2018, she made her debut as a solo artist with her digital single Easy, peaking at number 3 in South Korea. In September 2019, Whee In released her first single album Soar. In 2021, Whee In released her EP Redd, which peaked inside the top 10 in Korea. In the same year, she left RBW and signed to THEL1VE. In 2022, she released her second EP, Whee, which reached number 4 on the Circle Album Chart. In 2023, she released her first studio album, In the Mood.