What is the fine-grained topic of the following text: On April 9-10, Jack Gepson of the Glencoe-Silver Lake (GSL) Concert Band will represent GSL as a member of the 2016 Minnesota Band Directors Association (MBDA) State Level 9-10 Honor Band, held at Duluth East High School. Only return the topic.
Jack Gepson's participation in the 2016 MBDA State Level 9-10 Honor Band