There are certainly songs that have stood the test of time, including a medieval Spanish carol which is a favorite of mine, Riu Riu Chiu. The song was written in the Middle Ages and is attributed to Mateo Flecha the Elder. It is traditionally sung by a male voice, who is supported by a choir or chorale, and tells the story of the Virgin's purity and Jesus' birth. Please listen (and watch) the song through the link above. You can learn more of the history here and here.