This article examines the sociolinguistic practices of a group of young bilingual rappers in the Yucatán Peninsula of Mexico. Against the background of ongoing language shift to Spanish in the region, the language choices of a group of Maya youths involved in Hip Hop culture and their agency as policy-makers at the grassroots level is explored. While language mixing and hybridisation are everyday communicative practices for Maya speakers, rapping either completely in Maya or in a clear-cut alternation between Spanish and Maya is a conscious strategy for language promotion among these youths. It is claimed that the language choices in their music performances, which are underpinned by an essentialist outlook on language contact, increase authenticity and legitimacy of Maya and can finally work towards the revitalisation of this language.