Water Music
The Water Music is a collection of orchestral movements, often published as three suites, composed by George Frideric Handel. It premiered on 17 July 1717, in response to King George I's request for a concert on the River Thames.
Hallische Händel-Ausgabe
The Hallische Händel-Ausgabe ("Halle Handel Edition") is a multi-volume collection of the works of George Frideric Handel. It was first published in the 1950s: initially as an adjunct to the HG edition, but by 1958 as a collected edition in its own right. The collection's abbreviation of "HHA" can be used to identify individual works by Handel, for example Handel's "Messiah" can be referred to as "HHA i/17" (with the Roman numeral "i" designating "series 1"). For practical use, the HHA numbering of Handel's works has been superseded by the HWV numbering system.