Playing music helps us process speech
“It goes back to pitch, timing and timbre. Kraus argues that learning music improves the brain’s ability to process all three, which helps kids pick up language, too. Consonants and vowels become clearer, and the brain can make sense of them more quickly.”
For more information, check out this article from NPR: http://www.npr.org/sections/ed/2014/09/10/343681493/this-is-your-brain-this-is-your-brain-on-music.