The Rod Stewart concert scheduled for Sunday, August 9, at the Riverbend Music Center in Cincinnati has been abruptly postponed due to a minor medical procedure. Rod Stewart’s August 9 tour stop at Cincinnati’s Riverbend Music Center was called off at the eleventh hour. The Cause: Organizers cited a minor medical procedure required by the legendary singer. Organizers cited a minor medical procedure required by the legendary singer. Riverbend Music Center, a staple outdoor amphitheater along the Ohio River, relies heavily on peak-season summer weekend traffic.