Hankyung News is sharing former AOA member, ChoA is the hidden voiced heard in OST for KBS drama "그놈이 그놈이다 (To All The Guys Who Loved Me)"— 파룬 (@balloon_wanted) August 6, 2020
Previously it was speculated that ChoA's voice was heard in the OST that was playing through the drama https://t.co/nT8rGSAbqO
sources: KBS Drama, ballooon_wanted, daum
Original post where k-netizens speculated it was Choa's voice.
Interesting (even if it's a one-time thing) since she basically fell off the radar after leaving AOA, making few appearances on her instagram account at best.