There are hidden things that you can click on that make stuff happen. (Example: a computer.) To get out of that item, press B. After about 5 mins the window view in the bedroom should change. Press the up arrow to stop the music playing, though. It will finish the loop it's in first before stopping.
Released on the 24/3/2021. UPDATES: 6/10/2021: Licky cat fits the TV screen and an edible watermelon is added to the kitchen. 21/10/2021: A radio is added. DANCE PARTY!! A picture album is being added to the book.