The Lego House hitmaker joined puppet friends Elmo, Cookie Monster, Grover and pals to teach young viewers the differences between rules at home and at school by debuting a catchy tune to help them remember the lesson.

The Two Different Worlds segment featured lyrics like, "At home I can speak whenever I please/I can talk real loud and shoot the breeze/At school I raise my hand in the air when there’s something that I want to share".

The clip was posted online on Wednesday (01Apr15), and Sheeran shared a link to the footage on his page, writing, "Filmed that a long time ago, happy it's finally out".