The Mississippi Chorus will kick off it 24th season with an open house Sept. 8 from 1:30 to 3:30 p.m. at the Municipal Art Gallery, 839 N. State St., in Jackson. Registration forms will be available for the 2012-2013 season for ages 18 and older and the chorus will perform under the direction of Artistic Director Michael Hrivnak and accompanist David O’Steen.