If you’ve listened to IU‘s latest song, “You & I“, you would’ve heard a loud grunt right before the bridge. Netizens amused by the “Argh” sound have been trying to figure out who made it, and it was revealed to be none other than IU herself! The song’s composer, Lee Minsoo, recently revealed that “The voice behind the grunt belongs to IU herself. It was planned before the song was recorded.” Read more on Allkpop.