An interesting setting along with the theme, it does sort of fit it since obviously there's a lot of distractions in theater when trying to perform. Especially when people are trying to get you to do stuff. It's also a nice visual touch that lends itself to a bit of extra gameplay with the "dance" mechanic.
Although it just being a button prompt, especially when said prompt can be blocked by the text bubble is a bit more of a "expected" distraction I guess, leading to it feeling less like a distraction. Since it's always the same, which to be fair, it was within 3 hours, so that makes sense, but it does lead to a bit of monotony.
Which is then helped by the "enemies", other actors not sure, that come from interesting directions with some varying speeds which is nice. Not just a horde moving from the side etc. which makes it require a bit more focus on where they're coming from at any time.
Overall though an interesting setup like is aid to put it in a theater, and to have the distractions be crowd interference. A bit more variety obviously would always help, but it is a jam, and it's 3 hours, so this is pretty cool.