Acclaim for this Canadian singer-songwriter (by the likes of Elvis Costello, no less) is so annoyingly predictable, it almost makes you long for a backlash. That is until you take a listen to Blue Boy, his fourth gorgeous album. The disc’s grittier sound, courtesy of producer Steve Earle, is a perfect complement to Ron Sexsmith’s ”Waterloo Sunset” croon, and even potentially dangerous dips into loungy jazz and reggae (huh?) are just lovely. Can’t he do anything wrong?