Mariachi Music originated in Mexico. International Mariachi Week which celebrates this fun and energetic music is the last week in April each year. In 2023 this year, it is April 21-28:
https://nationaltoday.com/international-mariachi-week/
https://todowafi.com/culture/2023/04/18 ... the-music/
https://www.visittucson.org/events/fest ... onference/
There is also a Mariachi Day which happens on January 21 each year:
https://nationaltoday.com/mariachi-day/