GWAR To Headline MWTX Party 4 Posted by Zach Shaw on March 12, 2010 Tweet GWAR, Andrew W.K., Billy Bragg and more will perform at the Mess With Texas (MWTX) Party 4. The two day festival will be held in Austin, Texas on March 19-20. Tags: Andrew W.K., Billy Bragg, GWAR, MWTX Party 4 Categorised in: News Ticker