It may have only seemed like haunting background music at the time, but Podrick's rendition of Jenny's Song on Game of Thrones could actually be a major foreshadowing about the future of Jon Snow and Daenarys Targaryen's relationship.
The Easter egg from the books the show is based on popped up towards the end of the episode when several knights, including Jaime and Tyrion Lannister, Brienne of Tarth, Pod, Davos Seaworth and Tormund Giantsbane, are all sharing a drink together as they wait out what's possibly their last night on earth.
When Tyrion requests a song, Pod steps up to the plate, singing mournfully: "High in the halls of the kings who are gone. Jenny would dance with her ghosts. The ones she had lost and the ones she had found. The ones who had loved her the most."
A cover of that same song, performed by Florence and the Machine, also played during the closing credits of episode two.