: The song (music by Ariel Ramírez, lyrics by Félix Luna) is protected under copyright until at least 70 years after the authors’ deaths (Ramírez died 2010, Luna 2009). In many countries, it’s not yet public domain.

(check copyright status in your country):

The piece is typically found in three distinct formats within PDF repositories:

I can point you toward the specific that fits your style.