I met a Lady in the Meads Full beautiful, a faery's child, Her hair was long, her foot was light And her eyes were wild.
Why it works
This quatrain displays the ballad stanza in its purest form: the second and fourth lines rhyme ("child" / "wild") in the ABCB pattern, while the lines alternate between iambic tetrameter ("I met a Lady in the Meads") and iambic trimeter ("Full beautiful, a faery's child"), producing the rapid, propulsive 4-3-4-3 beat that drives the narrative forward.