The young boy joined the band because he loved the sound of percussions. He felt elation while playing the drums.
The band teacher made a perennial statement to the class that permeated through the classroom. The teacher just wanted to infer that the class needed to work hard and practice.
At the first performance the class had to persevere due to the dilatory teacher. The teacher had to defer the concert to make sure the class was ready to perform.
The teacher contended that the class understand his decision and understand his intent was to make sure they were ready to perform.