Solo artist Yoo Sung Eun has returned with her newest single, "Deep" - part 1 of her new series, titled 'Travel'. 

Yoo Sung Eun's "Deep" is the artist's first attempt at Neo soul, combining her rich, smooth voice with a sensual melody. Check out the retro-style MV above, and look forward to more of Yoo Sung Eun's 'Travel' series soon.