Mountain Valley High School Chorus members performed the “Star Spangled Banner” for the Maine Roller Derby (MRD) opening bout at the Portland Expo recently. The students included, from left, Marina DeRoche, Kristen Arsenault, Eric Thomas, Alicia White (hidden), Natasha Munzner, Mackenzie Gonzalez, Nadia Tag, Leah Perry (hidden) and Kelli Trenoweth. Michael Prescott directed the ensemble. The Rumford high school students have performed for MRD before and they have become a welcome addition to the opening ceremonies for each home bout. The students are scheduled to perform again at Happy Wheels on Warren Avenue in Portland on Saturday, Nov. 1. For more information on the MVHS Music Department, visit http://mprescot1.wix.com/mvhsmusic. For more information on Maine Roller Derby, visit www.mainerollerderby.com.