Millie and Max have been finding out some more things about music and language in child development.

In a book called "Music Learning and Teaching in Infancy, Childhood, and Adolescence (Vol. 2)" Millie and Max learned that music and language share a number of the same elements, including; frequency, timing, and timbre.

Millie explains "Frequency is like the different notes in Twinkle Twinkle".