Steve Angello's X imprint returns with a new collaborative single from house stalwarts Sunnery James & Ryan Marciano and Chocolate Puma. While Chocolate Puma's accolades stretch back to the early 90s and their credentials are irrefutable, Sunnery James & Ryan Marciano represent one of the most lauded new forces in house music, quickly joining the upper echelons of dance music. Bringing their sizeable talents and experience to the table, the Dutch foursome proves to be hugely effective on the new single. Stripping things right back, 'Stiffness' is built around a razor sharp groove that is primed for the dance floor. Using the march of the live percussion to drive the track forward, deep bass and evolving riffs are layered to keep the momentum rising throughout.