VIDEO: Four years later, Gabby Giffords reunites with TIRR staff

HOUSTON (KTRK) -- Today, Memorial Hermann Hospital released video of former U.S. Congresswoman Gabrielle Giffords return to TIRR four years after she was shot in the head in Arizona.

There were all smiles and hugs in the reunion and even a duet with her music therapist. Watch the entire video below.