Jacob Collier (b. 1994)
This precocious, open, intelligent young musician struck me with his facility with harmony. His arrangements of well-known songs are delightfully complex to hear, as he brings them new freshness.
Lately he says he's discovered jazz. I hope he retains the formalism of (so-called) classical harmony, so that he has a strong enough reference foundation to rise coherently. Recently he was picked up by Quincy Jones's management company. He has a bright future.