Tantum ergo (doubtful), K. 197 — a short Eucharistic hymn setting
ヴォルフガング・アマデウス・モーツァルト作
Mozart’s Tantum ergo (K. 197) is a brief setting of the Latin Eucharistic text, transmitted in sources as a small-scale church work but with doubtful authorship. It is usually described in D major and is often dated to the early 1770s (rather than securely to 1770), with no definitive occasion or place of composition known.
Background and Context
Wolfgang Amadeus Mozart (1756–1791) was in his mid-teens in 1770, travelling in Italy with Leopold Mozart and absorbing a wide range of sacred and theatrical styles; yet the surviving documentation for Tantum ergo K. 197 does not firmly anchor it to that tour, to Salzburg, or to any specific liturgical celebration. Modern reference points instead stress the work’s problematic transmission: K. 197 appears alongside another Tantum ergo (K. 142) in shared source traditions, and both were long treated as of uncertain authenticity. A set of later 18th-century copied parts from the former Benedictine monastery at Neumarkt–St. Veit attributes the piece to Mozart, but no autograph score is known, so the attribution remains doubtful rather than secure. [1]
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A practical point of confusion persists in modern cataloguing: although some databases give K. 197 in G major, widely circulated performing materials and library listings describe it as D major. [2]
Musical Character
In the sources most commonly used today, K. 197 is a compact, jubilant setting marked Allegro (about 51 bars) for mixed chorus (SATB) with an orchestral accompaniment of two trumpets, timpani, strings, and organ continuo—a festive sonority associated with Eucharistic devotion and Benediction. [2] The choral writing is largely homophonic (text-aligned block harmony), designed for clarity of the hymn’s two stanzas (Tantum ergo / Genitori genitoque), with an efficient, cadence-driven rhetorical shape rather than expansive development. In this respect, the piece fits the functional world of Salzburg-area Latin church music—whatever its true authorship—aiming less at contrapuntal display than at direct ceremonial impact.
[1] Carus critical foreword/edition notes discussing doubtful authenticity, sources (Neumarkt–St. Veit parts), and lack of known autograph.
[2] IMSLP work page for Tantum ergo in D major, K. 197/Anh. C 3.05 (instrumentation, tempo, bar count, dating estimate).