River Thames
The Water Music composed by George Frideric Handel premiered on 17 July 1717, when King George I requested a concert on the River Thames. The concert was performed for King George I on his barge and he is said to have enjoyed it so much that he ordered the 50 exhausted musicians to play the suites three times on the trip.
Organ concertos, Op. 4 (Handel)
Handel's six organ concertos were published in 1738 by John Walsh as the composer's Opus 4. The four concertos HWV 290-293
had been written to be played in the intervals of performances of his oratorios "Esther", "Deborah" and "Athalia" in March and April 1735 in the newly opened theatre of John Rich in Covent Garden; the other two concertos HWV 289 and 294 served the same purpose in February and March of the following year for performances at the same venue of Alexander's Feast HWV 75, Handel's setting of John Dryden's ode.