I'm on a music kick lately. Cleaning my office resembles an archeological dig! I uncovered this quote:
"Music is one thing that stimulates and utilizes most parts of the brain. Both the right hemisphere and left hemisphere are involved because while one codifies lyrics, the other teaches melody."
In the classroom, try to have written versions of all the songs you sing available for free-choice reading. At home, include "sing-able" books in your child's library. If you can't find book versions of your child's favorite songs, create your own versions incorporating your child's artwork or photographs. These make lovely keepsakes as well.