Minnesota baby boy, Elijah Cook, was born earlier this year with profound hearing loss.
At nine-weeks-old his tiny ears were fitted with hearing aids at the Children's Hospitals and Clinics of Minnesota, allowing him to hear his mum, Ahavah, himself, and the world around him, for the first time.
DO YOU HAVE A STORY TO SHARE WITH LIFE & STYLE? SEND US AN EMAIL
Ahavah uploaded a video to YouTube of her son's first encounter with sound.
"The first time I saw him blink, I had a lot of emotions," Ahavah told children's health blog, Mighty.