Gallimathias musicum (also spelled Galimathias musicum) in D major, K. 32, is a quodlibet composed in March 1766 by Wolfgang Amadeus Mozart during his grand tour of Europe. It was first performed at The Hague on 11 March 1766. A typical performance of this piece lasts twenty minutes.

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The work is scored for strings, two horns, two oboes, bassoon and harpsichord and consists of seventeen movements:

1. Molto allegro
2. Andante in D minor
3. Allegro
4. Pastorella in G major
5. Allegro
6. Allegretto in A major
7. Allegro
8. Molto adagio in G major
9. Allegro in C major
10. Largo in D minor
11. Allegro
12. Andante in F major
13. Allegro in E-flat major
14. Menuet in F major
15. Adagio in D minor
16. Presto
17. Fugue in F major