This work was composed during a composition seminar given by David Eagle at the University of Calgary in 2004. It was dedicated to Kathryn Ladano who premiered it that year in Calgary. Over the past four years, Harry Sparnaay, Fernando Domínguez and Antonio Rosales, have also performed this work several times. Kathryn Ladano has interpreted it in several cities in Canada; Harry Sparnaay in Spain and Italy; Fernando Domínguéz in Puebla, Mexico and Mexico City; and Antonio Rosales also performed it in Mexico City and in Puebla, Mexico. The material in the sound file was created with several basic sounds such as bass clarinet, prepared piano, and several prehispanic instruments such teponaztles (a hollowed trunk with two wedges to be stricken with drumsticks), and huesos de fraile (priest bones), which are actually clusters seeds. The harmonic and melodic material of the sound file and the live bass clarinet, are based on the notes found on the teponaztles and the whirl xylophone, which is also included in the recording. Ladano has been published by Periferia, Sheet Music, Barcelona, Spain. – Veronica Tapia