Is this punctuation correct?

It's a spoken quote that references song lyrics. In the song it's structured as

Yo soy así, y así seguiré, nunca cambiare

Would the follwing be correct in terms of punctuation? Specifically the second comma, and anything else that looks weird?

Yo soy así, y así seguiré, ¡Y nunca cambiaré!

submitted by /u/sueteres
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