Just as an aside I once recorded a version of Lord Bateman in the 60s from a lady who learnt it from her father. She sang about half of the verses but those she couldn't remember she recited in prose, so accurately that we were able to piece together the full ballad. The effect of her performance on that day was something similar to a cantefable, but even then I knew what a cantefable was (thanks to EFDSS Journals), and didn't consider for one moment that this could have been a cantefable.