Put this clip at the very start of your edit, before any announcement or reveal, then follow it with Law and Order Dun Dun for the reveal and DJ Airhorn when the joke lands.
關於此聲音
This is the 11-second Plantão da Globo breaking-news alert from Brazilian television, a dramatic musical cue used to interrupt regular programming for urgent news. It feels tense and attention-grabbing, giving any announcement an immediate sense of importance and urgency. The clip comes from the network's Plantão bulletin, the breaking-news interruption.