Joan Baez. Barbara Allen with lyrics
https://www.youtube.com/watch?v=NqHJ4V893e0
This video includes a recording of Joan Baez singing the folk ballad "Barbara Allen," offering a look at the type of ballad that Rossetti may have modeled "Cousin Kate" after. The version Baez performs is one of many variants transmitted around the English-speaking world.
The Ballad of John Henry
https://www.youtube.com/watch?v=OF-3t8Id6mA
Similarly, this video includes a recording of and lyrics to "The Ballad of John Henry," another popular folk song.