Koh Jihyeong, also known as "by me," is a Korean ballad singer who first gained recognition through her participation in the OST of the web drama The Worst Break-Up in My Life. In March 2019, she officially debuted with the single "Like Itâs Nothing," which showcased honest lyrics and a straightforward vocal style. She has also contributed to the OST of the variety show Love Interference and released single albums such as Drive, Only You, and Stand By Me. Additionally, the ballader performed as part of the duo A+B with fellow singer Able. Her single "Tears Will Forget You," released on October 9, 2025, entered Melonâs Top 500 chart at rank 18 the day after its release.
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