My favorite K-Pop group recently had their 'Tiny Desk Korea' Live set picked up and cross posted by NPR Music.
This is a challenge themed show where the Girls were not allowed In-Ears and no pre-processing on their Mics and only have the backup band to go off of...
This is about 5 of their Original Songs rearranged in an R&B Jazz Funk kind of style and they just absolutely KILL IT.
Their Vocal Harmonies are insane.
Fair warning they are all Bilingual and their lyrics flip back and forth a lot between English and Korean but NPR Subbed everything in English if you turn CC on and you don't need to know Korean to hear the talent.
These Girls are about to go International.