The field of music therapy began 50 years ago. Music therapy is "The scientific application of music to make changes that are non-musical - physical, emotional, cognitive."
-Angele Neve, MT-BC, NMT The Music Therapy Center of California.
Music is something that every brain can understand. Music stimulates the entire brain. For detailed information about how the brain responds to music, see these neurological music therapy informational videos by Nicole Jacobs on YouTube.
You will find many, many videos on this subject on YouTube. The two examples here were chosen because they are very informative on the entire subject of Neurological Music Therapy.
Based on this science, it makes sense to incorporate music, songs and rhythms whenever you can. You can create songs for different activities to help your child - actually people of any age - memorize the steps in a routine - even your address and phone number.