V.O.S�grooved along to their cover of Onions' "Fail to Understand" featuring Nine Muses's Euaerin�on�'Immortal Song 2'!

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V.O.S put a modern twist on the '70s classic by turning it into a medium-tempo dance track and recruited label mate Euaerin who performed a cute rap.�V.O.S beat out Lee Soo Young in this round with 406 points and made it to the final round against Yurisangja who ended up winning first place.

Check out the collaboration stage above!