The top national programs are:

Music Together

Sometimes the best way to teach your child something is to learn more about it yourself.  If you are embarking on formal music education for your child, it would be prudent to learn more about how children learn, what music is best at which age, and setting reasonable expectations for their development of skill.

The following books are highly recommended, though don't forget to check out Little Amp's guide to developmental stages.

Infants and toddlers need their own specialized music programs. You don't need to spend money necessarily (you could do much of this at home or as music playdates with friends), but you do need to have reasonable expectations of your baby. Some simple guidelines are:

Birth to 18 Months > Toddler to Preschooler > Elementary School > Middle School to Highschool

Birth to 18 Months > Toddler to Preschooler > Elementary School > Middle School to Highschool