Sentimental vocalist Ga In released an OST track for MBC 'My Spring Day,' "I believe."

This was the first time that Ga In took part in a drama OST and with this, it was reported that Ga In will be planning on broadening her scope in music.

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The song "I believe," expresses the ardent love that Dong Ha has for Bom Yi in the drama with its soft ballad instrumentals complimented with affectionate lyrics.

Check out "I believe," above!