Place it as the continuous bed under the whole drawing sequence, then add the background music loop before it if you need a longer intro, and save any punch-in effects for the final reveal moment at the end.
关于此声音
This is a 19-second background music excerpt with a steady, upbeat instrumental loop and no vocals. It feels light, focused and quietly motivating, the kind of unobtrusive track that keeps energy up without pulling attention away from what is happening on screen.