up coming out with a masterpiece, Almira, at Weissenfels, in July. He stayed there for a while, spending many holidays there, eventually heading back to Hamburg shortly after Easter in 1705, to produce a comeback to Händel's Nero, produced in February 1705. Keiser would have to face Händel again, but this time he would be at home, and Händel had switched to the phonetic Italian version of his name, Giorgio Friderico Hendel. Händel would put on what was planned as a double opera, but was in fact two, Florindo, and Daphne; he did that in January 1708, coming back from Italy. Keiser would counter that by eventually coming out with La forza dell'amore, oder, Die von Paris entführte Helena and Desiderius, König der Langobarden in the 1708/09 season, not as the theatre's manager, but as someone responding to political insecurities causing the opera company to be disorderly. Keiser worked in the background. Keiser would continue as the director probably when things got more stable in the city, maybe in 1710, and he advanced in composing, coming with his own passion music in 1712, which Händel would readily challenge in 1716. In 1718, with the Hamburg Opera defunct, he left Hamburg to seek other employment, going to Thuringia and then Stuttgart. From this period, three manuscripts of trio sonatas for flute, violin and basso continuo survive. During the summer of 1721, he returned to Hamburg, but only a few weeks later made a rapid exit to Copenhagen with a Hamburg opera troupe, probably because of the growing influence of Georg Philipp Telemann, engaged by the city magistrate in Keiser's absence. Between 1721 and 1727, Keiser traveled back and forth between Hamburg and Copenhagen, receiving the title of Master of the Danish Royal Chapel. After the dissolution of the opera troupe, Keiser returned once more to Hamburg, but changes in its operation made repeating past success difficult. Three operas from the period between 1722 and 1734 survive. Personal relations with Telemann remained good, with Telemann programming several productions of Keiser's operas. In 1728 he became the St. Mary's Cathedral precentor of Hamburg (succeeding Johann Mattheson to the post), and wrote largely church music there until his death in 1739. In an obituary, his colleague Mattheson described him as "the greatest opera composer in the world". Major operas (First performances in Hamburg, Theater am Gänsemarkt, unless stated otherwise) Basilius (Der königliche Schäfer oder