Place it right after the reveal in your edit, following Sudden Suspense for the build-up, then let Oh My God Wow follow it for a second reaction before Kids Cheering closes the moment.
Über diesen Sound
This two-second clip is a single drawn-out vocal exclamation, 'ooh aaah', delivered with rising excitement and no other words or music. It feels warmly amazed and a little playful, like a crowd reacting together to something impressive, surprising or unexpectedly satisfying. The sound lands as pure delight rather than shock, making it easy to recognise even without any context around it.