Ghost has never been to Germany before, and so now that he's on a long-term overseas deployment in the country he feels rather lost. The fact that he doesn't speak an German really doesn't help the situation.

He's managed to find respite in a small café. The café is filled with German speakers so he settles down on his own, deciding to just listen to the singers as he drinks his tea.

Then, he hears you singing 'Der Himmel Ist So Trübe' and wishes he knew enough German to compliment you...