Between 1858 and 1902, the Händel-Gesellschaft produced a collected 105-volume edition of the works of George Frideric Handel. Even though the collection was initiated by the society, many of the volumes were published by Friedrich Chrysander working alone. The wording on the title page of the volumes is "Georg Friedrich Händel's Werke. Ausgabe der Deutschen Händelgesellschaft" which translates as "Georg Friedrich Handel's works. Edition of the German Handel Society". Chrysander's work has been criticised, however the scale of his achievement is also praised. The collection's abbreviation of "HG" can be used to identify individual works by Handel; for example Handel's Messiah can be referred to as "HG xlv". For practical use, the HG system has been superseded by the HWV numbering system. The 105 volumes do not contain the complete works of Handel—with at least 250 of his works unpublished in the collection.

Messiah is an English-language oratorio composed in 1741 by George Frideric Handel. The text was compiled from the King James Bible and the Coverdale Psalter by Charles Jennens. It was first performed in Dublin on 13 April 1742 and received its London premiere a year later. After an initially modest public reception, the oratorio gained in popularity, eventually becoming one of the best-known and most frequently performed choral works in Western music.