Rostock-born producer and DJ Carlo Ruetz makes it back to Oliver Huntemann's Senso Sounds with Hypersonic, a four-track EP. "Don't Know" kicks off -- a bruising, powerful cut that combines a tough-as-nails rhythm section with bubbling, acidic vibes. "Hypersonic" ups the ante even more -- driving drums provide the bedrock for expressive percussion and a devastating bass pulse. "Simultan" continues the party -- a tech-house monster with filthy sub bass waves and firing rhythm track.