Ballad stanza is a stanza, which consists of four lines with abcb rhyme scheme. There are four accented syllables in the first and third line, while in the second and the fourth lines there are three accented syllables. Use of supernatural elements is an imperative feature of a ballad.
Ballads emphasize strong rhythms, repetition of key phrases, and rhymes; if you hear a traditional ballad, you will know that you are hearing a poem.