Symphony No. 18 (Haydn)
symphony by Joseph Haydn

The Symphony No. 18 in G major, Hoboken I/18, is a symphony by Joseph Haydn. The composition date is conspicuously uncertain. The Breitkopf catalogue entry assures that it was composed no later than March 1766, the date of the Esterhazy orchestra moving to Esterhaza, but most scholars believe it was composed at least a few years before then. Dates between 1757 and 1764 have been also suggested but not proven.
Music
The symphony is scored for two oboes, bassoon, two horns, strings, and continuo.
Although the symphony is in three movements, it has been sometimes categorized as in the sonata da chiesa style due to the presence of an entire opening slow movement. The three movements are:
The opening movement is written in the form of a trio sonata with two melodic lines over an independent bass.
This brief starts where responsible research should: with the source description of “Symphony No. 18 (Haydn)” as symphony by Joseph Haydn. Everything that follows is an evidence route, not borrowed authority.
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The subject matters to the general reference register because the source frames it as symphony by Joseph Haydn. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Feb 23, 2026. The linked authority identifier is Q2102970. VIAF identifies the subject as 293564094. None of the 1 selected statements returned an explicit reference. The first chronological checks are 1766, 1757 and 1764.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Symphony No. 18 (Haydn)” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.