What songs will be sung 1000 years from now.

Perhaps, one out of 100,000 actual songs contain the quality of verse/tune to endure through centuries, those that connect to the soul of the performer/listener:

Will "Barbara Alan/Ellen"? (perhaps)
Will "Greensleeves"? (probably)
Will Campbell's "Country Roads" (never)

As a variation on a theme, a challenge to the "musicologists" tapping in to the MC, what songs from 1,000 years ago, or before, are STILL being sung, in the Western World?