A Special Sound is a heartfelt and practical guide written by music producer and sound engineer Eder Lemus, who—driven by his personal journey as the father of two children on the autism spectrum—has created an accessible and deeply meaningful resource for families, therapists, and educators.

This book explores the transformative power of music in the neurological and emotional development of children with special needs. It blends science, art, and personal experience to offer practical tools for sensory stimulation, auditory integration exercises, relaxation routines, and structured musical activities for everyday use.

Included therapeutic resources:

• Step-by-step guidance for parents on how to use music at home to support communication, behavior, and emotional regulation.

• Activities based on 432 Hz frequency music to promote emotional balance and improve attention.

• Breathing exercises and sensory synchronization techniques using sound.

• An accompanying instrumental album featuring original compositions designed for specific moments of the day (transitions, routines, play, rest, etc.).

• Tips for integrating music therapy into family life, classrooms, and even church environments.

Currently, A Special Sound has been validated and adopted by the Regional Center of Orange County (RCOC) in California as a valuable therapeutic resource for families of children with special needs, highlighting its innovative, therapeutic, and community-centered approach.