In this study, two groups are interviewed: the first study includes a sample of 60 physicians and health providers in the field of deafness, whose opinion on music therapy is collected by a specific questionnaire; the second involves 8 parents of deaf children attending music therapy lessons, who are asked to give an evaluation on the effect of music therapy, based on the experience of their children. Results show that health professionals know very little about the rehabilitative effectiveness of music therapy, whereas the parents of deaf children give a positive evaluation on the psychological, behavioral and linguistic benefits that music therapy gives to their deaf children.