Ander Tellería is one of the three most international young Spanish players according to the ABC Journal. His zest for innovation and the search of new ways of expression have led him to work with more than 20 composers including A. Nishimura, A. Edler-Copes, J.J. Eslava or J.M. Sánchez-Verdú. His interest in ancient music and his research work on this field have led him to develop new sounds and use the meantone accordion, an instrument with tuning features that make it similar to the sound of the Spanish Renaissance. With this instrument he has collaborate with composers like J.J. Eslava and S. Nesic.

He studied with I. Alberdi and S. Hussong, and currently combines his career as a performer with teaching accordion at the Music Academy of Aragón, in Zaragoza (Spain).