What are ballet poems?

Okay, so there are two possible answers to this question depending on what you're actually asking.

1) You heard the term, and simply picked up on it wrong. In poetry, a "Ballad" is a type of poem which is very like a song in its structure, and often has a distinct rhyming pattern.

2) You are asking for someone to describe the dancing style known as "Ballet" in a poetic form. If this is the case, you should go to the link in related links.