Live poetry depends on and is performed by the human voice, speaking comprehensible words. You should be able to make sense of the words (although it may be a bit difficult to grasp - but that depends mainly on the poet ....).
Combining spoken poetry with music can be quite effective. The following piece, called "Pianissimo", is an example of such a fruitful combination of words, voice and music. The work is by Marian Vaags. She wrote the text, recorded it and played the (partly dismantled) piano.