How many symphonies did Mozart compose?
Mozart symphonies of spurious or doubtful authenticity Mozart symphonies of spurious or doubtful authenticity This list of Mozart symphonies of spurious or doubtful authenticity contains 39 symphonic works where an initial attribution to Wolfgang Amadeus Mozart has subsequently been proved spurious, or is the subject of continuing doubt. The number of symphonies actually written by Mozart is imprecisely known; of the 41 formally numbered, three (Nos 2, 3 and 37) are established as by other composers and another, No. 11, is considered by scholars to be of uncertain authorship. Outside the accepted sequence 1–41, however, there are around twenty other genuine Mozart symphonies, and beyond these, a
Mozart symphonies of spurious or doubtful authenticity larger number of problematic works which have not been authenticated as Mozart's. Some of these may be genuine; dubious works are often treated as authentic by the compilers of collected editions—eight are in the 1991 "Neue Mozart-Ausgabe" (NMA: English "New Mozart Edition"). Some, however, have long been accepted as the works of other composers, who in many instances have been positively identified. Many of the authentication difficulties arise from early Mozart symphonies, where original autograph scores are missing. In some instances the main body of the work has been entirely lost, its identity being preserved only through an incipit (record