Sussex County-Sussex County Community College will present the a cappella Doo-Wop of The Sheps as part of its Thursdays on the Green summer music and entertainment series. The Sheps will perform at 6:45 p.m. on July 15 on the College Green, rain or shine. The performance is free and the public is invited to attend. Spectators are advised to bring their own blankets or chairs. For more information, call 973-300-2307 or visit sussex.edu.