Note sull'episodio
I read from double to double bind.
The word of the episode is "double bass".
https://en.wikipedia.org/wiki/Double_bass
The audio was from this video of the very talented Adam Ben Ezra:
Theme music from Jonah Kraut
https://jonahkraut.bandcamp.com/
Merchandising!
https://www.teepublic.com/user/spejampar