Rose Tree Park Summer Concert 2024 Tickets. The annual summer concerts in rose tree park’s outdoor amphitheater began over four decades ago as part of the nation’s bicentennial celebration and have become a popular local tradition for. The delaware county summer festival concert series takes place annually in the park's outdoor amphitheater, enticing thousands of visitors to bring their blankets and lawn chairs to the hillside.

The delaware county summer festival concert series takes place annually in the park’s outdoor amphitheater, enticing thousands of visitors to bring their blankets and lawn chairs to the hillside. All events are free to the public and run wednesday through sunday nights for nine weeks during the summer.