Nobody has ever counted to five as beautifully and harmoniously as Pentatonix has. Make sure to check out their backstage mashup of "C is for Cookie" and "Rubber Duckie:" http://goo.gl/f1p2f9 Subscribe to Pentatonix channel here: http://www.youtube.com/subscription_center?add_user=ptxofficial Subscribe to the Sesame Street Channel here: http://www.youtube.com/subscription_center?add_user=SesameStreet For more fun games and videos for your preschooler in a safe, child-friendly environment, visit us at http://www.sesamestreet.org Sesame Street is a production of Sesame Workshop, a nonprofit educational organization. The Workshop produces Sesame Street programs, seen in over 150 countries, and other acclaimed shows, including The Electric Company. Beyond television, the Workshop produces content for multiple media platforms on a wide range of issues including literacy and numeracy, emotional wellbeing, health and wellness, and respect and understanding. Learn more at http://www.sesamestreet.org.