Though youthful stylists like Young Thug and Chief Keef have hogged the media’s attention, Washington D.C.’s Shy Glizzy has quietly become one of the most convincing and original street rappers in the country. LAW 3 shows him fast maturing without losing his essential voice. And what a voice it is: youthful yet raspy, always on the verge of cracking. The desperation and vulnerability that radiates from Glizzy only intensifies his bravado. He plays the idol on “Cocky” and “Awesome,” but the most revealing moment is “Funeral,” a splendid and poignant foretelling of his own downfall.