When Handel first came to London, he had done much to encourage the production of opera in the Italian style. Later these productions had to be given up for lack of money, and the King's Theater remained closed for a long time. Finally a number of rich men formed a society to revive opera in London. The King subscribed liberally to the venture. Handel was at once engaged as composer and impressario. He started work on a new opera and when that was well along, set out for Germany, going to Dresden to select singers. On his return he stopped at Halle, where his mother was still living, but his old teacher had passed away.

The new opera "Radamisto" was ready early in 1720, and produced at the Royal Academy of Music, as the theater was now called. The success of the production was tremendous. But Handel, by his self-will had stirred up envy and jealousy, and an opposition party was formed, headed by his old enemy from Hamburg, Buononcini, who had come to London to try his fortunes. A test opera was planned, of which Handel wrote the third act, Buononcini the second and a third musician the first. When the new work was performed, the third act was pronounced by the judges much superior to the second. But Buononcini's friends would not accept defeat, and the battle between all parties was violent. Newspapers were full of it, and many verses were written. Handel cared not a whit for all this tempest, but calmly went his way.

In 1723, his opera "Ottone" was to be produced. The great singer Cuzzoni had been engaged, but the capricious lady did not arrive in England till the rehearsals were far advanced, which of course did not please the composer. When she did appear she refused to sing the aria as he had composed it. He flew into a rage, took her by the arm and threatened to throw her out of the window unless she obeyed. The singer was so frightened by his anger that she sang as he directed, and made a great success of the aria.

Handel's industry in composing for the Royal Academy of Music was untiring. For the first eight years from the beginning of the Society's work he had composed and produced fourteen operas. During all this time, his enemies never ceased their efforts to destroy him. The great expense of operatic production, the troubles and quarrels with singers, at last brought the Academy to the end of its resources. At this juncture, the famous "Beggar's Opera," by John Gay, was brought out at a rival theater. It was a collection of most beautiful melodies from various sources, used with words quite unworthy of them. But the fickle public hailed the piece with delight, and its success was the means of bringing total failure to the Royal Academy. Handel, however, in spite of the schemes of his enemies, was determined to carry on the work with his own fortune. He went again to Italy to engage new singers, stopping at Halle to see his mother who was ill. She passed away the next year at the age of eighty.

Handel tried for several years to keep Italian opera going in London, in spite of the lack of musical taste and the opposition of his enemies; but in 1737, he was forced to give up the struggle. He was deeply in debt, his whole fortune of ten thousand pounds had been swept away and his health broken by anxiety. He would not give up; after a brief rest, he returned to London to begin the conflict anew. The effort to re-awaken the English public's interest in Italian opera seemed useless, and the composer at last gave up the struggle. He was now fifty-five, and began to think of turning his attention to more serious work. Handel has been called the father of the oratorio; he composed at least twenty-eight works in this style, the best known being "Samson," "Israel in Egypt," "Jephtha," "Saul," "Judas Maccabæus" and greatest of all, the "Messiah."

The composer conceived the idea of writing the last named work in 1741. Towards the end of this year he was invited to visit Ireland to make known some of his works. On the way there he was detained at Chester for several days by contrary winds. He must have had the score of the "Messiah" with him, for he got together some choir boys to try over a few of the choral parts. "Can you sing at sight?" was put to each boy before he was asked to sing. One broke down at the start. "What de devil you mean!" cried the impetuous composer, snatching the music from him. "Didn't you say you could sing at sight?"

"Yes sir, but not at first sight."

The people of Dublin warmly welcomed Handel, and the new oratorio, the "Messiah," was performed at Music Hall, with choirs of both cathedrals, and with some concertos on the organ played by the composer. The performance took place, April 13, 1742. Four hundred pounds were realized, which were given to charity. The success was so great that a second performance was announced. Ladies were requested to come without crinoline, thereby providing a hundred more seats than at the first event.

The Irish people were so cordial, that the composer remained almost a year among them. For it was not till March 23, 1743, that the "Messiah" was performed in London. The King was one of the great audience who heard it. All were so deeply impressed by the Hallelujah chorus, that with the opening words, "For the Lord God omnipotent reigneth," the whole audience, including the King, sprang to their feet, and remained standing through the entire chorus. From that time to this it has always been the custom to stand during this chorus, whenever it is performed.

Once started on this line of thought, one oratorio after another flowed from his prolific pen, though none of them proved to be as exalted in conception as the "Messiah." The last work of this style was "Jephtha," which contains the beautiful song, "Waft her, angels." While engaged in composing this oratorio, Handel became blind, but this affliction did not seem to lessen his power for work. He was now sixty-eight, and had conquered and lived down most of the hostility that had been so bitter against him. His fortunes also constantly improved, so that when he passed away he left twenty thousand pounds.