It’s like a math problem as much as it is a tone and feeling problem. You only have about 23 seconds or so to find a piece that evokes the right emotion, flows with the scene, and is in the right key. Which means you’re probably gonna have to edit, cut, and stretch other pieces to make that all work.
Here’s a low-rest lo-fi mockup I did.
I really like this! I’ll need to listen to it somewhere other than my phone, I think that’s why it sounds a little tinny…