Sheila Sanfeliz Lillar (Mexico City, 1991) is a musician specialized mainly in composition. She enriched knowledge at the Accademia Nazionale di Santa Cecilia (Italy) under Ivan Fedele, at the Royal Conservatoire of Antwerp (Belgium) under Wim Henderickx, at the Academy of Arts of Florence (Mexico) under Ricardo Perera. 

She has collaborated as composer and performer in diverse interdisciplinary projects also with different ensembles such as Ensemble Liminar, Modelo 62, Ensemble Orkvs, HERMESensemble, the Antwerp Symphony Orchestra. She has participated in different ateliers and master classes guided by percussionist Robyn Schulkowsky, trumpetist Reinhold Friedrich, composers Christian Wolff, Fritz Cellis, Georges Aperghis, Roger Reynolds, Brian Ferneyhough. She assisted the 48. International Summer Course for New Music In Darmstadt , the Biennale College 'International Masterclass of Musical and Multimedia Computer Science' (Venice, 2019), the International Festival for New Music and Technologies ‘Visiones Sonoras 16’ (Mexico, 2020), L’Académie internationale de Mise en scène de Théâtre musical  (Nîmes, 2022).