U&I (album)

U&I is the debut studio album by South Korean duo, Hyolyn x Dasom. The album was released on August 10, 2021, by VAST Entertainment. It marks Hyolyn and Dasom's first musical release as a duo, following their previous activities as members of the now-disbanded girl group Sistar. The album features the title track "Summer or Summer." U&I explores themes of friendship, summer vibes, and refreshing concepts, showcasing the vocal harmonies and distinct charms of both artists. The album consists of a variety of genres, including pop and dance, aiming to capture the essence of summer.