César Pastor is a founding member of the Asturian pipe band La Tayuela de Mecer where he performs as gaita soloist, and the Irish traditional group, Shymen. He has collaborated with artists such as José Ángel Hevia, Cristina del Valle, and the folk group Corquieu. He has also guested on stage as soloist with Carlos Núñez, The Chieftains, and Brenga Astur. He is central to the advancement of uilleann piping in Madrid, boasting a large following of students. He is currently in the process of creating a Spanish uilleann pipers society, Na Píobairí Uilleann España. He is regularly invited to give master classes and workshops throughout the country (Cáceres Irish Fleadh, El encuentro de Músicos Tradicionales en Crevillent, etc.).
