I have been a fan of the Rock ‘N Learn Series for about a year. My first experience was winning Alphabet Exercise from another Blogger’s Giveaway. My son was hooked. Then my Mom ( a teacher ), purchased a 3 pack of Rock n Learn DVD’s from a book Club that hosts inside her Teacher’s Lounge and my son received those this past Christmas. Now I have been asked to review Letter Sounds and I was excited to try that one. Of all the Preschool-age DVD’s we now have, we hadn’t had the Letter Sounds. I now believe this one is my son’s favorite. He watches about 20 minutes worth of these before bedtime. I can hear him relating to the characters and really playing along with the games and practices. Letter Sounds is for ages 4-7 (my son is 3 and does superb, so it is great for an eager to learn toddler). It has an on-screen mouth to really teach how to sound the letters. The CD comes with a colorful book to follow along with.