“Resound” consists of two 15-minute dances, one choreographed by Jan Bartoszek of Hedwig Dances and the other by Julia Rhoads of Lucky Plush, set to the same piece of music by Sheldon B. Smith. It will be performed, along with additional pieces by each dance company, Wednesday at 7 PM at the Chicago Cultural Center and Thursday at 12:15 PM at the Harold Washington Library. Both shows are free. For details, call 312-744-6630.