Zydeco stopped being an old man’s game in the late ’80s when Zydeco Force turned it upside down and modernized it, thereby ringing in the era of nouveau zydeco. If J.J. Caillier’s latest is any indication, zydeco might be shifting again. While nouveau zydeco and Caillier in particular, have burrowed deeper and deeper into contemporary R&B and hip-hop over the years, he still manages to manifest it in a way here that’s still somewhat radical. The runaway hit “She’s the Bomb,” this year’s answer to “The Cupid Shuffle,” is not predicated upon the usual simple accordion riffs, amped up bass and hard-rapping drums. Rather, it features jarring hip-hop beats, synchronized beeps and blurred guitar chord changes. Ironically, the accordion, the genre’s staple instrument, was the last thing added to the mix and maintains minimal presence relative to other recordings. So far “Bomb” has not only had heavy rotation on zydeco stations but also on contemporary R&B and even crossed over to a country station. Caillier’s ingenuity is felt elsewhere as well. Instead of the typically sparse arrangements, his are densely layered with supporting melodies, rhythms and special effects. A few mid-tempo songs are euphorically melodic and were intended for relaxed listens, but Caillier hasn’t abandoned what established him and several tracks are compelling dance numbers. However, even these have their homegrown subtleties. Guitarist Kent August’s jazz-tinged rhythm chords groove with a sense of motion. Only time will tell if Caillier’s sixth CD will be his ultimate knockout punch, but already the judges have awarded him victory of yet another bout.