A soloist in the Grammy Winner album Duruflé: The Complete Choral Works, Cecilia created the role of Renata in the first Mariachi Opera Cruzar la Cara de la Luna with Mariachi Vargas de Tecalitlán, commissioned by Houston Grand Opera (2010, 2013, 2018); Châtelet Theatre in Paris, France; Chicago Lyric Opera, San Diego Opera, Arizona Opera, The Fort Worth Opera, Teatro Nacional Sucre, in Quito, Ecuador,  New York City Opera, El Paso Opera, Minnesota Opera, and Opera San Antonio.

Other roles originated are Renata in El milagro del Recuerdo (HGO 2019, 2022); (AZO, 2021); Dido in The Queen of Carthage, (Early Music Vancouver and re: Naissance Opera); Jessie Lydell in A Coffin in Egypt, (HGO and the Wallis Annenberg Center in L.A.); Gracie in A Way Home (HGO and Opera Southwest); Harriet/First Responder in After the Storm(HGO); Alicia in Some Light Emerges (HGO); and Alma in  "Boundless," the first episode of Houston Grand Opera’s web opera series Star-cross’d.

Operatic roles include Linda Morales in Laura Kaminsky's Hometown to the World, Melissa in F. Caccini's Alcina, Sarelda in The Inspector, Maria in Maria de Buenos Aires, Loma Williams in Cold Sassy Tree, among others. 

She is a vocalist in the Kaleidoscope Vocal Ensemble, performing early and contemporary music.

Cecilia holds a Bachelor and Master of Music Degree from the University of Houston, and a second Master in Clinical Mental Health Counseling from Northwestern University. Along with her performing career, she is a licensed therapist providing Mental Health services to the arts community.