Watch the MV for SNSD TaeYeon's 'All with You', 'Moon Lovers: Scarlet Heart Ryeo' OST

SNSD's very own Queen of OST is back!

She's no other than Kim TaeYeon, and here she is singing 'All with You' for the drama titled 'Moon Lovers: Scarlet Heart Ryeo'~

Meanwhile, 'Moon Lovers: Scarlet Heart Ryeo' also stars SNSD's SeoHyun.