Mariachi is one of the oldest sounds in Mexican music, dating back to at least the 19th century, when rural bands adopted European instruments—guitars, violins, horns—and moved toward Mexico City. Old as it is, it continues to evolve, incorporating more modern styles while still retaining its roots. This playlist serves as a snapshot of mariachi, now and then; our editors update it regularly, so if you like a song, add it to your library.