High school musicians across the southern portion of Iowa will be performing in the jazz band festivals being held tomorrow. Mid-Prairie and Lone Tree are among the districts that have registered to take part in the contest at Clear Creek-Amana High School in Tiffin. Another local district, Winfield-Mount Union, is participating in the festival being held in Fort Madison. Festivals for schools in the northern half of the state were held Monday. Districts that place first or second in their class receive an invitation to the Iowa Jazz Championships scheduled for March 31st in Des Moines.