A special Rhythms on the River on Thursday, April 7, will spread the Fest love to Lafayette’s Southside. Flags, pins and posters will be on sale. Or you can buy a Festival Pass, donate to Amis du Festival, join The Rain Angels’ Circle or sign up to volunteer. You may even get a gander of this year’s T-shirt designs. Rex Moroux opens for the Tony Goulas Band in Degaulle Square in River Ranch. 5:30 pm – 8:30 pm.