Veteran singer Lee Moon Sae has collaborated with none other than R&B solo artist Heize for his new single "Blur," the title track on his 15th studio album 'Between Us.'

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The song's title refers to the way that the painful emotions and hurtful memories of a past relationship seem to blur over time so only the sweet memories are remembered. The sentimental theme of the track perfectly melds with the exquisite and soothing vocals of both artists, singing over a beautiful melody produced by piano and strings.

Neither Lee Moon Sae nor Heize actually appear in the music video. Instead, the craftily blurry camera follows a couple as they share a number of touching and romantic memories together.

Watch the full music video for "Blur" above!