Although Bryan Cherry shifted his billing from bandleader to soloist, his way of overlaying genres atop each other hasn’t changed a bit. The Milwaukee singer/guitarist moves all over the place stylistically within the course of the five songs comprising Black Holes. Cherry’s restless versatility makes any song as apt for consideration by hard rock jukebox bar patrons and adult R&B radio music directors as pop-radio fans and jam-band concertgoers. Per that last potential audience, though, he keeps every Black Holes track under four minutes; their arrangements are loose enough to accommodate further improvisation and interpolation. Cherry’s singing tops it with encouraging, positive vibes.