"That's Kay's kids giving three groans for Kay," explained Silver. "At least, they started with the idea of giving three groans. They've got up to about three hundred by this time. It seems to have fascinated them. They won't leave off. There's no school rule against groaning in the grounds, and they mean to groan till the end of the term. Personally, I like the sound. But then, I'm fond of music." Morrell's face beamed with sudden pleasure. "I knew there was something I wanted to tell you," he said, "only I couldn't remember what. Your saying you're fond of music reminds me. Mulholland's crocked himself, and won't be able to turn out for the concert." "What!" cried Kennedy. "How did it happen? What's he done?" Mr Mulholland was the master who looked after the music of the school, a fine cricketer and keen sportsman. Had nothing gone wrong, he would have conducted at the concert that night. "I heard it from the matron at our place," said Morrell. "She's full of it. Mulholland was batting at the middle net, and somebody else--I forget who--was at the one next to it on the right. The bowler sent down a long-hop to leg, and this Johnny had a smack at it, and sent it slap through the net, and it got Mulholland on the side of the head. He was stunned for a bit, but he's getting all right again now. But he won't be able to conduct tonight. Rather bad luck on the man, especially as he's so keen on the concert." "Who's going to sub for him?" asked Silver. "Perhaps they'll scratch the show," suggested Kennedy. "Oh, no," said Morrell, "it's all right. Kay is going to conduct. He's often done it at choir practices when Mulholland couldn't turn up." Fenn put down his empty saucer with an emphatic crack on the counter. "If Kay's going to run the show, I'm hanged if I turn up," he said. "My dear chap, you can't get out of it now," said Kennedy anxiously. He did not want to see Fenn plunging into any more strife with the authorities this term. "Think of the crowned heads who are coming to hear you," pleaded Jimmy Silver. "Think of the nobility and gentry. Think of me. You must play." "Ah, there you are, Fenn." Mr Kay had bustled in in his energetic way. Fenn said nothing. He _was_ there. It was idle to deny it. "I thought I should find you here. Yes, I wanted to see you about the concert tonight. Mr Mulholland has met with an unfortunate accident, and I am looking after the entertainment in his place. Come with me and play over your piece. I should like to see that you are perfect in it. Dear me, dear me, what a noise those boys are making. Why _are_ they behaving in that extraordinary way, I wonder!" Kay's juniors had left the pavilion, and were trooping back to their house. At the present moment they were passing the school shop, and their tuneful voices floated in through the open window. "This is very unusual. Why, they seem to be boys in my house. They are groaning."