The PSR2000 has no Mariachi styles. The only keyboard that comes with any Mariachi styles is the Tyros. It has four Mariachi styles. However, you might rephrase your question to ask if anyone has any Mariachi styles. I'm sure that some people have created PSR Mariachi styles that you could load into your PSR2000.

I think some of the Tyros Mariachi styles won't load into the PSR2000 because they are too big. Maybe with some editing it would be possible.

Good luck.

Beakybird