MetroWest's 'Wash Your Hands' Goes Viral (!)

http://www.youtube.com/watch?v=eNxVLVHGlTk
Credit to Liz Cooney of the Globe's 'White Coat Notes' for posting — and helping to spread — this MetroWest video with its infectious music and potential to go viral. (Sorry. Spreading. Infectious. Viral. But really, it's already at nearly 3,000 views on Youtube!) What the heck is that tune, can someone tell me? Was it an Abba song called "You can count on me" or something??