He returned again to Naples after an absence of twelve years, and created a grand sensation at the San Carlo by his singing of _Assur_, in "Semiramide." The Neapolitans loaded him with honors, and sought to retain him in his native city, but this "pent-up Utica" could not hold a man to whom the most splendid rewards of his profession were offering themselves. Lablache made his first appearance in London, in 1830, in "Il Matrimonio Segreto," and almost from his first note and first step he took an irresistible hold on the English public, which lasted for nearly a quarter of a century. It perplexed his admirers whether he was greater as a singer or as an actor. We are told that he "was gifted with personal beauty to a rare degree. A grander head was never more grandly set on human shoulders; and in his case time and the extraordinary and unwieldy corpulence which came with time seemed only to improve the Jupiter features, and to enhance their expression of majesty, or sweetness, or sorrow, or humor as the scene demanded." His very tall figure prevented his bulk from appearing too great. One of his boots would have made a small portmanteau, and one could have clad a child in one of his gloves. So great was his strength that as _Leporello_ he sometimes carried off under one arm a singer of large stature representing _Masetto_, and in rehearsal would often for exercise hold a double bass out at arm's length. The force of his voice was so prodigious that he could make himself heard above any orchestral thunders or chorus, however gigantic. This power was rarely put forth, but at the right time and place it was made to peal out with a resistless volume, and his portentous notes rang through the house like the boom of a great bell. It was said that his wife was sometimes aroused at night by what appeared to be the fire tocsin, only to discover that it was her recumbent husband producing these bell-like sounds in his sleep. The vibratory power of his full voice was so great that it was dangerous for him to sing in a greenhouse.