Since their founding in 2007, the Madrid based ensemble Sigma Project has premiered more than 85 works and introduced hundreds more to audiences from Teatro alla Scala in Milan to Teatro Colon in Buenos Aires. Their commitment to commissioning new works is the saxophone quartet’s parallel to the Kronos Quartet.Juan Antonio Cuellar’s Cuatro Artificios is a four-movement work that follows the classical structure of the quartet or symphony (Allegro-Adagio-Scherzo-Allegro Finale) and draws on both Baroque and early 20th-century techniques. Each movement is an artificio: a skillful and inventive creation. From Fanfarrias (Fanfares) and it’s rhythmic ostinatos and canon to Tocatas (Tocattas), a dizzying moto continuo culminating in an explosive finale.Carolina Noguera Palau’s Canticos del Azar utilizes extended techniques to evoke the chirimias caucanas (flute-led ensembles from Cauca), but also introducing dance-like rhythmic patterns that evoke Cali’s vib