A bunch of great underground rappers made fine albums in 2007 — Brother Ali, Sage Francis, El-P, and so on. But none brought the thunder quite like Aesop Rock, who shows no ill effects after moving from his beloved Big Apple to San Francisco a few years ago. As always, Aesop’s rhymes are as dense as the fog in his new hometown; this is a man of ridiculous verbal talent. But what sets “None Shall Pass” apart from the pack are the best beats of Aesop’s career, thanks in large part to longtime collaborator Blockhead. The bouncy keyboard hook of the title track is unforgettable, while the dark, driving “Coffee” gets a lift from Mountain Goat John Darnielle. Long considered a big talent, “None Shall Pass” pushes Aesop Rock to the head of the class.