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,