Offertorium “Sub tuum praesidium” (doubtful), K. 198 (F major)
de Wolfgang Amadeus Mozart
The Offertorium Sub tuum praesidium (K. 198) is a brief Marian setting in F major, associated with Salzburg in the early 1770s, when Wolfgang Amadeus Mozart (1756–1791) was about 17. Although long transmitted under Mozart’s name, its attribution remains uncertain, and modern reference lists often flag it as doubtful.
Background and Context
The Latin text Sub tuum praesidium—a prayer to the Virgin Mary—places this offertory within Salzburg’s routine devotional repertoire rather than the grand ceremonial masses that dominate Mozart’s sacred output of the later 1770s. The work circulates without a surviving autograph, and its source situation has left Mozart’s authorship in question; IMSLP, for example, notes that Mozart’s authorship is uncertain and that Grove does not include it in its work list.[1]
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Still, the piece has been edited and performed as part of the Kleinere Kirchenwerke (“smaller church works”) tradition; the score available via IMSLP is taken from the Neue Mozart-Ausgabe (NMA), placing it alongside other compact liturgical items associated with Salzburg church practice.[1]
Musical Character
Sub tuum praesidium is scored for voices (soprano and tenor, or two sopranos in some traditions) with strings and continuo (organ)—a modest palette that suits an offertory’s functional role.[1] In F major, its prevailing affect is intimate and supplicatory: vocal lines tend toward smooth, conjunct motion and parallel writing, supported by a restrained string texture and a harmonically grounding bass/organ continuo.
If the work is genuinely by Mozart, its interest lies less in virtuoso display than in economical church style: a young composer shaping clear phrases, balancing two upper voices against a lightly articulated accompaniment, and keeping the rhetoric close to the prayer’s inward tone. The result is music that feels designed to “fit” the liturgy—brief, singable, and quietly persuasive—even as questions of authorship encourage caution in attributing its subtleties to Mozart with confidence.
[1] IMSLP work page for Sub tuum praesidium, K. 198/Anh. C 3.08 — catalog numbers, scoring, notes on uncertain authorship, and NMA publication details