The idiosyncratic East Coast rap that Kool Keith trailblazed is beautifully distilled on Love & Danger. He starts “New York” with a triumphant, uptown-cool soul sound before declaring himself the city’s king of rap and the “new Kanye West” over a grinding click-rap beat that could derail a subway car. Elsewhere, “Goodbye Rap” might initially seem like a career swan song, but its tinkling piano keys actually find Keith smacking down a generation of artists he deems unfit to even wire his mic.