UTAH (WABC) -- For a family in Utah, music is playing an important role in allowing a big sister and her little brother to communicate.
Doctors thought that 2-year-old Bo Gray wouldn't speak for a few more years because he has Down syndrome.
But his family found music helped him learn to talk, so his big sister took out her guitar so the two could sing together.
Bo's very first word was "happy."
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Big sister's music teaches toddler with Down syndrome to talk
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