Hi Jimothyburns, thank you so much for the valuable suggestion. We have been getting similar requests regarding the BGM, and it is one of the higher priority tasks that we are working on. While we do not have an estimated release date at the moment, we will try to have the update ready as soon as possible. Thank you!
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Glad to hear it! Another small quality of life suggestion would be to be able to conveniently designate which pages have certain backgrounds. As it stands, you can either manually input backgrounds each time for each page, or you can "Apply background to all pages in this scene." Neither options are particularly convenient if you switch backgrounds multiple times in a scene. I'm enjoying the app, though!