Handel had presented new operas in London for years with great success. One of the major attractions in Handel's operas was the star "castrato" Senesino, whose relationship with the composer was often stormy and who eventually left Handel's company to appear with the rival Opera of the Nobility, set up in 1733. Handel moved to a different theatre, Covent Garden, and engaged different singers, but there were neither sufficient audience for opera in London nor aristocratic supporters to back two opera houses at once, and both opera companies found themselves in difficulty. In 1737 the Opera of the Nobility collapsed into bankruptcy and what was left of its performers and resources combined with Handel's Covent Garden opera company, which returned to the King's Theatre, Haymarket, where his earlier operas had been presented.