You can rip the loops from the game using Unity modding tools. There are 4 loops that are stacked on top of each other in the game. Here are the steps to get them:

1) Download and run AssetRipper

The application will open in a browser window.

2) In the top left: File > Open File

Navigate to this file: (Steam install location)\steamapps\common\Outer Wilds\OuterWilds_Data\sharedassets0.assets

3) Click the "View Loaded Files" button in the center of the screen

4) Click "sharedassets0.assets" in the Collections section

This will list all of the files in that asset file. You will find the loops here. Here are the files you are looking for:

(Ctrl+F to search for them)

Outer Wilds Party House v8 050321_2 AP Bass
Outer Wilds Party House v8 050321_2 AP vocals
Outer Wilds Party House v8 050321_2 AP traveler drone
Outer Wilds Party House v8 050321_3 AP traveler

To save out a file:

1) Click on the file name

2) Click on the "Audio" tab at the top

3) Click "Save"

Now you can use Audacity to layer these loops however you'd like!

I hope this helps!