In a series on Congresswoman Gabby Giffords, ABC's World News cited her therapists as  "angels" and "unsung heros". In addition to the video above, other videos feature Dr. Nancy Helm-Estabrooks, W. Carolina University, Congresswoman Giffords head speech pathologist and Dr. Oliver Sacks, professor of Neurology at Columbia University and author of the book, "Musicophilia" who states that "Nothing activates the brain so extensively as music." His book gives an overview of the therapy and explains how music supports language re-learning. Gabby's progress has been quite remarkable and she gives due credit to her team of therapists who have utilized humor, music, and emotional support to help Gabby move forward. Other videos can be seen at http://abcnews.go.com/US/gabby_giffords/humor-determination-key-congress... and http://abcnews.go.com/US/gabby_giffords/ A newly released book by Gabby and her husband titled, Gabby: A Story of Courage and Hope also documents her recovery process.