The recent history of New Orleans is fraught with tragedy and triumph. Both are reflected in the city's vibrant, idiosyncratic music community. In Keith Spera's intimately reported Groove Interrupted, Aaron Neville returns to New Orleans for the first time after Hurricane Katrina to bury his wife. Fats Domino improbably rambles around Manhattan to promote a post-Katrina tribute CD. Alex Chilton lives anonymously in a battered cottage in the Treme neighborhood. Platinum-selling rap...