Yeo In-hyeok

Inhyeok Yeo (, ) is an a cappella singer who is best known for singing each part of a music score using only his own voice.
Career.
In 2013, he started making cover versions of music videos on YouTube, including a quick succession of the covers of Michael Jackson's "Thriller", "BAD", Stevie Wonder's "I Wish", Christopher Cross's "Sailing" and Eric Clapton's "Change the World". These cover songs became hits worldwide and gained over three million views.
His current goal is to win a Grammy Award.