This is a list of symphonies by Wolfgang Amadeus Mozart. Symphonies No. 2 and 3 are spurious. Mozart's "37th symphony" is actually Michael Haydn's 25th symphony; Mozart only added a 20-bar slow introduction to it. Some symphonies of doubtful authenticity were included in either the Alte Mozart-Ausgabe or the Neue Mozart-Ausgabe; they are in this list but marked as doubtful or spurious. No. 11 is considered by scholars to be of doubtful authenticity. Further spurious and doubtful symphonies can be found at Mozart symphonies of spurious or doubtful authenticity.