Visited the National Museum of Scotland to find out about how they set up topic specific exhibits. They use a lot of various presentation methods here. Glad to say there is an audio guide available on request. Audio visual interactive screens and object displays, some of which you can touch, all add to the visitors enjoyment and engagement. I plan to adopt some of this approach not just for the showcase but for my second session with the choir. The example below was a 5 page 'turn when you are ready' visual, succinct description of the Bovid family. This could work for the madrigal and it's sub-types.