In Season 2 Episode 3. Couldn’t understand all of it but lyrics go something like this:

“Troubles on when you travel light.
??? calling the dead of night.
Will you answer me?
Make amends on another strike(?)”

edit: nevermind, found it: https://www.youtube.com/watch?v=JrdIljgP5m0 Wonder how they stumbled upon this for the show …