'Sing' themed Dance concert graphic required

This is what a business in Australia was looking for in their graphic design

We are looking for a design we can use as the background image on sublimated shirts as well as advertising posters for our end of year dance concert based on the animated movie Sing. We are open to suggestions but one idea we have is to base around the birthday invitation inspiration pic below and have two different images. For the back of the shirt it would have the curtains, lights, stage, light box (with no text so we can add later) and the title (Showtime) in the same font as Sing. No images or silhouettes of the characters can be included as ours are going to be humans not animals. For the front of the shirt it would be similar but have a microphone on the stage instead of the Lightbox and title.
There is also one of the movie promo posters that does not have character images included so we would be happy for you to have a go designing something similar to that.

We have also included graphics from some of our previous concerts (Encanto, Frozen, Willy Wonka, Desce… Read more