Carl Cox lands in Madrid to close out BASSMNT Club’s 4th anniversary in unforgettable style After an unforgettable first night with Laurent Garnier, the celebration continues with another living legend of electronic music: Carl Cox — a true pioneer and global ambassador of techno — takes over our booth on Saturday, October 4th. With over three decades of career-defining sets, unforgettable festival moments, and unmatched energy behind the decks. BASSMNT Club wraps up its 4th anniversary celebration with two historic nights that will echo through the underground scene of Madrid for years to come.