Girl's Day's Sojin is the voice behind "Close Your Eyes" for the 'Life' OST.

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"Close Your Eyes" is the second track to be released for 'Life', and it's an emotional piano ballad about the rest after a long, rough day like the doctors live in the drama series. Though Sojin's vocals are usually heard in upbeat pop tracks, she's showing another side of her talent in the ethereal track. 

Check out Sojin's "Close Your Eyes" above, and let us know what you think in the comments below!