LE SSERAFIM just dropped a special collaboration video!

On July 4 KST, members Kim Chaewon and Huh Yunjin teamed up with pop singer ABIR for a stripped-down version of "Sour Grapes," a B-side track off of their debut mini album 'FEARLESS' that ABIR has co-production credits on. In the video, each singer is seen simply performing into their microphone, allowing viewers to focus on their lovely vocal performance.

Check out the performance above!