The news only got worse when her parents subsequently learned that Brittany was also severely retarded and autistic, which would drastically limit her ability to socialize and communicate.
Because of Brittany’s unique memory, she can play thousands of songs, even though she can’t do simple addition. Dr. Treffert describes a memory capacity that is deep but very narrow, and he speculates that high-level savants like Brittany come installed with "genetic or ancestral memory."
It’s estimated there are only about 50 people like Brittany in the world — people known as "prodigious savants" because their abilities are as remarkable as their limitations. NBC
LISTEN TO BRITTANY'S MUSIC: