Testimonials: (fragments)

·          “[Alfonso] is one of the most gifted guitarist of his generation....He has won the admiration of his colleagues throughout the music world”. Dr. Nicholas Goluses. Guitar professor at the Eastman School of Music.

·          ''Rarely have I encountered in my teaching as fine a guitarist as Alfonso Aguirre Dergal.....He is a consummate and captivating performer with an astonishing technique''. Benjamin Verdery, guitarist and composer, Professor of guitar at the Yale School of Music.

·          “I recently had the enjoyment of attending his Master of Music degree recital; the event filled me with a great regard for his talent and creativity”.Ingram Marshall, composer and professor of composition at Yale University.

·          “Excellent control, diction and timing – mature and colorful – Highest artistic standards....Thank you for a meaningful performance”. Alan Harris, professor of Cello, Eastman School of music.

·          ''[Alfonso] manages to sing, dance, and dazzle all at once'...totally convincing'' Charlie Castelman. violinist and professor of Violin at the Eastman School of Music.

·          ''Beautiful, imaginative and very musical realizations. The [J.S. Bach] Chaconne was fabulous...Bravo!'' John Graham, Professor of viola at the Eastman School of Music.

Reviews: (fragments)

·          ''Aguirre-Dergal has the technical brilliance and musicality to inspire and awe from his audience.'' The Coastal Current. (TX). January 25, 2008.

·           '' The music he creates makes you feel you are a part of an intimate conversation that sometimes possesses a unique sweetness of tone, sometimes speaks with a sensuous expressiveness, and sometimes brings fire to the stage.'' South Padre Parade. (South Padre Island, TX) January 17, 2008.

·          ''Alfonso Aguirre Dergal performed one of the most brilliant graduation recitals in my twenty two years of teaching at Yale'' Benjamin Verdery. Degree Recital Report. Yale School of Music. April 11, 2008.

·          ''This artist has an ascending musical career that will surely make him one of the  most important guitarists and performers of his generation in Mexico'' La Guitarra Clásica en Guadalajara. (a book on the history of the classical guitar in guadalajara Mexico). Guillermo Ramírez Godoy. Benemerita Sociedad de Geografía y Estadística del Estado de Jalisco, A. C. Promoción Cultural de Jalisco, A. C. 2004.