Chris Copulos (born 1986 or 1987), better known by his stage name Muscles, is an Australian electronica musician. Muscles’ debut album Guns Babes Lemonade was released in Australia on 29 September 2007. The album entered the Australian ARIA Album Chart at No. 14 on 8 October 2007, reaching No. 3 on the Australian Artist Chart and No. 1 on the Dance Album Chart in its first week.