It was his habit to sleep with the gaslight burning feebly, near the head of his bed. He turned the gas on to its full power, and inspected the intruders. They appeared to be musicians, who were humming and singing, as if in preparation for a musical performance. He rang a bell, which summoned his man servant. John soon arrived, and was ordered to put the strangers out. ‘There is nobody here, sir,’ was John’s reply to the order. For a moment Mr. A. was not only amazed, but alarmed. ‘What!’ he exclaimed, ‘do you see no one there?’ ‘No one,’ said John. ‘Go where those chairs are, and move them,’ was Mr. A.’s next direction. John did so. The strangers stepped aside, but did not go out. By this time Mr. A. had gathered his wits about him, and was satisfied that he was the victim of a hallucination; and he determined to observe its phenomena carefully. Accordingly, he bade his servant depart, and prepared to watch his visitors. But they were so life-like and human, that he was again staggered, and recalling John, told him to go for the house-keeper. She soon came, and on being interrogated, confirmed John’s statements that there were no strangers in the chamber and no sounds to be heard. Convinced by the testimony of two witnesses, Mr. A. yielded to the decision of his reason, and again resolved to go on with the investigation of the strange phenomena. The musicians had now resumed their position, near the window and opposite the foot of the bed. Mr. A. turned the light of the gas full upon them. He looked at his watch, which marked the hour of half-past two. He then arranged his pillows, so as to sit almost upright in bed, and waited for the next scene of the play. He was able to note the size, form, dress, and faces of the performers. One was a large man, who bore some resemblance to Brignoli. The two others were of less size, and shorter stature than their companions. All were habited in dress coats, with white waist coats, and wore white cravats and white gloves. After a little time spent in coughing and clearing their throats, they began to sing. They sang at first a few simple airs, ‘Sweet Home’ among others. They then attempted more difficult music, and gave selections from Beethoven and Mozart. Between the pieces they chatted with each other in a foreign language, which Mr. A. took to be Italian, but they did not address him. Occasionally they changed their position, turned in various directions, and part of the time sat down. Mr. A. said the singing was excellent; he had rarely heard better. After the first feeling of surprise and amazement had passed away, he enjoyed the music exceedingly. The performance continued in this way for some time, when it suddenly came to an end. The singing ceased, and the singers vanished. He looked at his watch, and found that the time was four o’clock. The concert in his brain had lasted nearly an hour and a half, almost the length of an ordinary concert.