What is the fine-grained topic of the following text: Lunchtime concerts given by members of the Bundaberg Sinfonietta players will be held at Christ Church on Thursdays on these dates: March 28, April 18, June 27, July 25, August 29, September 26, October 31, November 28 and December 19. Only return the topic.
Lunchtime concerts by Bundaberg Sinfonietta players at Christ Church