From the historical figure of Ana María Regina Teuscher Krüger to the mythical character created by Antonio Velasco Piña, this research traces the different ways in which *Regina: October 2 Is Not Forgotten* was transformed into sound: records, electronics, pre-Hispanic instruments, a guitar suite, a soundtrack for the book, musical theater, dance, and ritual. From Mexico to Japan and back to Tlatelolco, a story about music, memory, and the cultural transformations of October 2, 1968.

Mexican Rarities is a record label and archive dedicated to the preservation and dissemination of Mexico's sound heritage. Established in 2021, it aims to build an accessible sound memory for future generations by exploring both contemporary music and ancient traditions. With an impressive sound collection and a series of musical productions, Mexican Rarities stands as a guardian of the country's musical diversity. Additionally, through research and audiovisual content, the institution contributes to the study of ethnomusicology, promoting a greater understanding of Mexican cultural identity.

¿What do we talk about when we talk about México? ¿How do we classify weirdness? ¿Is there such thing as something mexican or are we just in front of a political and power construct? This text is an introduction to Mexican Rarities as well as a critical approach to two concepts that gives form to the project: the rare and the mexican.