Pitbull’s machine-gun flow is the perfect fit for “Juice Box,” a skittering outburst produced by pioneering Baltimore club producer DJ Class. Pitbull also flirts with hard rock on “Can’t Stop Me Now,” which features a stomping guitar riff straight out of Jack White’s playbook. In a tribute to the glitz of his native Miami, “Shut It Down” echoes the glory days of ‘80s electro. And Rebelution is not short on tracks that put Pitbull in high-impact mode.