What do we lose when we read poetry only in translation?

Many English-speaking readers encounter poets such as Rumi and Hafez only through translation. A translation can carry the meaning, but the rhythm, cadence, and emotional force of the original Persian are harder to preserve.

This question inspired ZindeRood, where the original Persian text, human recitation, and English translation appear together, verse by verse.

When reading poetry from a language you do not speak, does hearing it in its original voice change your experience? What helps you connect with the poem?