I have read 30 random plays in the last 30 days, and somehow 3 of them involved characters hearing orchestral music that isn't there.
(Streetcar - Williams, Good - CP Taylor, EGBDF - Stoppard).

Extrapolated Conclusion: 10% of all theater is about imaginary music.

Them: "Why do you have such a nice gaming space?"
Me: "For gaming. Definitely gaming. Not... tea parties."
Also me: