Board Thread:TV Show Discussion/@comment-24179671-20160717100310/@comment-26402117-20160725131730

I fear that the North will have to face the Night's King alone, some Azor Azhai action could alleviate this but its unlikely. If this is the case and Jon finds out about his parentage, Jon and Bran are very unlikely to outlive each other. A "song" could be a reference to Rhaegar and the prophecy, and thus both Jon & Dany in political partnership/marriage...or it could be a reference to the "song" of steel in swordfights, and thus a civil war between Jon and Dany much like that of the Dance of the Dragons.

A note that Robb was initially inclined to declare for Stannis as the elder, and that Jon could declare his claim simply because of the Stark tendency for futile gestures of justice and honor. Conversely, each Stark that has marched on the North alone or with their levies has died for it.