The old lady (in rather a bossy mood, using her retired teacher voice) stands up and orders everyone back to their seats. "Now, anyone who is caught turning off the heating will lose their playtime and stand in the corner. The monitors will fetch more wood and stoke up the fire. Everyone take out your Singing Together songbooks from your desks and we will sing all the songs from page one onwards!"
She toddles over the to upright piano and starts to bash out the accompaniment (rather difficult, because she's munching on a buttered crumpet while playing).