Hi there! You can find all of Cullen's preschool videos and music for children at http://www.youtube.com/user/CullensAbcs#grid/user/EE7C6161E0DC46FA
Singing songs such as Old McDonald Had a Farm with your preschool kid is wonderful for many reasons. The most important reason is that singing is fun and preschoolers love to sing. Songs are great for increasing vocabulary and pronunciation. Using hand and body movements with songs and music helps preschoolers learn to control their bodies. There is even research that has shown that children who are actively involved in music do better in reading and math when they start school, are better able to focus and control their bodies, play better with others and have higher self-esteem. So sing a song now!