[0] Music mogul Damon Dash and his wife/business partner, designer Rachel Roy had a huge argument Wednesday night.

"They got into a screaming match," said a witness. Dash, who co-owns the club, was spotted at Cipriani Downtown before hitting the after-party for Lorraine Schwartz around midnight. "He was in an altered state," said Page Six's spy. "Rachel was curled up on a couch with another guy, and when he saw her he flipped and stormed out." Roy stayed put, but Dash headed back to Cipriani. A rep for Dash says, "There's no trouble."