Teaching Your Child Music from birth through preschool

http://www.helium.com/items/235853-teach-toddler-willing-learn

Yes, teach gently, here and there, as only you, the parent, can.

http://www.literacytrust.org.uk/talktoyourbaby/music_development.html

Yes, play Classical music now and then, including early music, Renaissance madrigals and such, for infants especially. Simple songs, such as folk songs and nursery rhymes, are good for toddlers now and then, and from birth occassionally play this recording:

http://www.angelfire.com/mac/mcclain/toddler.html

Follow the recording. Learn to do the two hand signs. YOU can learn how to teach your child to read music, very gradually, very gently, even while the child is learning from just hearing the recording.