Here’s your daily dose of enthnomusisnobbery. Those guys walking around the Mission with guitars? Not Mariachi. Mariachis wear the Three Amigos getups and feature violins as the lead instrument (not just trumpets), according to this informative video:
It goes on to point out that if you want the real thing, you gotta go to San Jose or LA.
Use that on your next date at Cava 22 to impress. Here’s some sample copy: “Actually, this doesn’t quite fall under the Mariachi idiom.” Be sure to use an extra nasal and high-pitched voice when you say “actually”.