Both smile.
The music sir explained them everything,the same as The principal said to them,that's why I didn't write it again.They both knew what to know but they listened to their music sir again because some points weren't clear to them.They clarified their doubts too.
Music sir : We will practice on the steps where the function is held always.The standing appearance will be according to your height,the taller ones will be at the back while the shorter ones at the front.The order will not be according to the class.