"Presenting a method that was conceived to provide a solution to a special condition, does not simply correspond to a formal act, but rather becomes a whole celebration since that is the best name with which a work of this nature can be classified. Although the pianist and composer Pilar Aguilar Muñoz has made a considerable number of musical creations, none, in my opinion, is as important as this one, since it includes a specialized contribution in the basic development of exercises for the left hand, as well as arrangements and transcriptions of musical works for piano, both from the universal repertoire and her own. In addition, she also extended her proposal to other Costa Rican composers in order to include their works for only the left hand as part of the method." Dr. Maria Isabel Carvajal