This is an anthology in the most traditional well-curated sense. Turn here if you want to find the best hip-hop artists of their generation in raw and unfiltered form. The bars are brimstone; rays of hope begin to emerge. If you remember the feeling you got when you first heard ''Soundbombing,'' stop searching. The slang has changed, the style remains indelible, the latest personas have emerged. The new sound is here.