After all, painful as the process must be, it would help him to find out more about human beings; and even at a very early age he had begun to be curious about the difference between himself and his friends.

The whole family gathered in the sitting-room to "teach Sirius music." Elizabeth produced her cherished but now neglected violin, On the few earlier occasions when she had played on it within earshot of Sirius, he always came hurrying to her, howling. If the door was shut, he gave tongue outside. Otherwise he rushed into the room and leapt up at her till she had to stop. On this occasion he at first made some effort to keep a hold on himself during the painful operation that his family were determined to perform on him. But excitement soon overcame him. Tamsy was at the piano. Maurice and Giles were ready, if wanted, with their recorders. Plaxy sat on the floor with her arms around the resigned but rather mischievous Sirius, "to keep him from going mad on us." For it was clear that Sirius was going to be difficult. When Plaxy let him escape, he bounded from instrument to instrument, making mock attacks on each. His tail thrashed from side to side in a conflict of agony and delight, knocking the bow from Elizabeth's hand, and sending a recorder flying across the room. Even when Plaxy held him, he turned the experiment to chaos by giving tongue with such vigour and virtuosity that the simple tones of the instrument were drowned, When at last he was persuaded to co-operate seriously, it was soon found that he had at any rate a far better ear for pitch than any of the family. When Elizabeth moved her finger so slightly on the string that none of the children could hear any difference, Sirius detected a change. Elizabeth was amazed to find that he could also sing accurately in tune. Once when she played a single tone and he could not restrain himself from giving tongue, the main element in his wail was obviously in tune with the violin, With a little encouragement he produced the pure note without any trimmings. When Maurice played a scale on his recorder, Sirius sang in unison with it, keeping perfectly in tune even with the inaccurate tones produced by the young musician on an imperfect instrument.

With his usual doggedness Sirius set about conquering this excruciating thing, music. He showed surprising aptitude for singing, soon outstripping Plaxy in reproducing the family songs. Sometimes he sang without words; sometimes he used his own canine equivalent of the English words of the song. (His lingo, being simply mispronounced English, rhymed and scanned appropriately.)

With practice he became less tortured by human music. In fact he actually came to like it, so long as it was not too badly out of tune. He would often join in singing the rounds that had formerly tormented him. Sometimes when Elizabeth played her violin he would come to listen. In certain moods he would retire to a favourite point of vantage on the moor and spend hours singing to himself. He would go over and over the songs that Elizabeth had so often sung about the house.

It was a tune-loving family. Under Elizabeth's influence it had developed an amusing system of musical calls which served the function of bugle-calls. A certain little tune meant "Time to get up," another "Breakfast is ready," another "All is now prepared for starting on the expedition," and so on. Plaxy and Sirius, the two youngest members of the family, invented a number of private calls of their own. One of these, for instance, meant "Come and help me!" Another said, "Something interesting here. Conic and investigate"; another "Come and play with me!" One little trickle of sound meant, "I am going to pee." To this there were two possible musical answers. One said, "Right oh! So am I," and the other "Nothing doing by me." It was curious, by the way, that if one of them made water the other had always to follow suit on the same spot, in the approved canine manner. Always? No! Plaxy soon found that she could not keep pace with Sirius in this etiquette of leaving tokens.

When Thomas heard of Sirius's habit of retiring on to the moor to practise singing, he feared lest his precious animal should become notorious as "the singing dog," and be exploited.