A page of a book detailing how to take care of Music lists her communication tablet as a comfort item, but she doesn't actually own this tablet until Ebo teaches her how to use it later in the film.
Zu has a scar from falling from a fire escape. This only appears for one shot and cannot be seen at any other point in the film.
George holds a grudge against Zu for breaking into his apartment and falling off the fire escape five months prior to the start of the film. When he's seen talking to Zu from his window, there is no fire escape attached to it.
After Music's first meltdown, Zu and Ebo take her to the library she loves. she, She's shown without her fanny pack in this scene, although she never leaves the apartment without it in any other scene.
Zu has a tattoo of some sort of line running up her left arm. There are several instances where she does not have it.
In a scene where Ebo plays the piano and has Zu sing the song "Music", the camera is noticeably wobbling.
At about 1 hr 5 mins, during "Could I Love With No Fear", the camera is out of focus for a moment.