The Symphony in B♭ major "No. 54", K. Anh. 216/Anh.C 11.03/74g, may have been written by Wolfgang Amadeus Mozart in 1771, in Salzburg.
The symphony is scored for two oboes or two flutes,[1] two horns and strings. In contemporary orchestras, it was also usual to include bassoons and harpsichord if they were available in the orchestra to reinforce the bass line and act as the continuo. The duration is approximately 14 minutes.
The symphony consists of the following movements:
The Alte Mozart-Ausgabe (published 1879–1882) gives the numbering sequence 1–41 for the 41 numbered symphonies. The unnumbered symphonies (some, including K. 74g, published in supplements to the Alte-Mozart Ausgabe until 1910) are sometimes given numbers in the range 42 to 56, even though they were written earlier than Mozart's Symphony No. 41 (written in 1788). The symphony K. 74g is given the number 54 in this numbering scheme.