On their self-titled debut, Michigan-based NOMO took Afrobeat in a completely new, gorgeously distorted, and fuzzy direction, but their sophomore stab makes no attempt to serve up more of the same. Few album titles could live up to the promisingly odd-sounding title Ghost Rock, yet 30 seconds into “Brainwave” you understand where it comes from. Yes, there are horns aplenty. Yes, African influence is abundant. (“All the Stars” features a wonderful rhythmic backdrop, perhaps thanks to percussionist Adam Rudolph.) And yes, their sound is still deeply entrenched in funk. Though these guys continue to build on a foundation of polyrhythmic swirls (rare in American jazz and funk), where their structure is climbing to, only the stars know.