JYP Entertainment's new duo 15& has impressed netizens once again with the release of a rehearsal video where they can be seen showcasing their outstanding vocal talents!

Already widely known as the winner of 'K-Pop Star' and the ballad prodigy of 'Star King', the two made their formal debut on the October 7th episode of 'Inkigayo'.

Dressed more casually in comparison to their image on stage, this new rehearsal video released this past weekend shows the girls looking their true age but exhibiting talent like no other. Netizens were especially impressed with the ease at which they climbed two octaves freely.

Expectations are running high for this prodigal new duo, so be sure to check out the video below!