Studio 4/4's segue from Q Nightclub to Kremwerk/Timbre Room has gone smoothly. Another case in point is this strong bill. Riva Starr (London-based Italian DJ/producer Stefano Miele) is a purveyor of rugged, trippy house music who’s performed at mega-festivals such as Glastonbury and Fuji Rock. He’s also famous for collaborating with Chicago house deity Green Velvet and for his “Re-chunk” edits, which have included rad transformations of Daft Punk’s “Burnin'” and the Doors’ “The End.” Dosem (Spanish producer Marc Ramirez) should complement Riva Starr well with his spacey, good-time techno and house selections. by Dave Segal