Place it on the landing at the end of a descent sequence, after Scream Meme Sound has covered the fall itself, then close with Emotional Damage Meme Sound once the character realises where they have ended up.
关于此声音
This is a short sung greeting, under three seconds, delivered in a bright voice over a quick musical rise. It feels cheerful and slightly absurd, like a grand hello for a place that is anything but welcoming. It comes from a fan musical take on Undertale, the 2015 game set in a cavern world below the surface, where the line opens the show for a newcomer who has fallen in.