Here is Tata Dios , as requested 🙇🏻♀️; this is the arrangement as played by Mariachi Los Camperos . This portion of the popurrí is in the key of A minor but I have you practice a form of an F scale (mixolydian 🤓) in 5th position. It would be best to practice this scale with an Eb (lowered 3rd finger) in preparation for the transition. Toward the end of the song be aware you will be in 6th position! This song is absolutely beautiful! Have fun practicing this!
https://youtu.be/oaIASeMl42s?si=ZAL8DH6kPpNhCfnh