Xaltelx, a new score for trio for two clarinets and bass clarinet has already been published by Cayambis Music Press – Latin American Classical Sheet Edition! Xáltelx is a work for young players that consists of five progressive movements that can be learned over the course of weeks or months as students become more proficient on their instrument. Furthermore, students can choose to perform individual movements—as these are prepared—or as many movements as desired.

https://www.cayambismusicpress.com/federico-xaltelx-p/cmp-1487.htm