Heo Young Saeng is the voice behind the 13th OST for MBC drama 'Blow Breeze'.

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"I Cannot Forget" is a sorrowful ballad about someone who can't forget about a past love, and it's obvious from the music video why it's a good theme song for Son Ho Jun in the drama. The MV includes scenes of a drunken fight, a dramatic pool rescue, and more.

Check it out above!