Wolfgang Amadeus Mozart - Eine Kleine Nachtmusik, Divertimento, KV 251, Ein Musikalischer Spass K. 522 / Concentus Musicus Wien, Nikolaus Harnoncourt / Das Alte Werk / TELDEC Audio CD 1994 Stereo / 4509-95982-2

UPC 745099598228

Eine kleine Nachtmusik (Serenade No. 13 for strings in G major), K. 525, is a 1787 composition for a chamber ensemble by Wolfgang Amadeus Mozart. The German title means "a little serenade", though it is often rendered more literally as "a little night music". The work is written for an ensemble of two violins, viola, cello and double bass, but is often performed by string orchestras.

Divertimento /dɪˌvɜːrtɪˈmɛntoʊ/ (Italian: [divertiˈmento]; from the Italian divertire "to amuse") is a musical genre, with most of its examples from the 18th century. The mood of the divertimento is most often lighthearted (as a result of being played at social functions) and it is generally composed for a small ensemble. The term is used to describe a wide variety of secular (non-religious) instrumental works for soloist or chamber ensemble. It is usually a kind of music entertainment, although it could also be applied to a more serious genre. After 1780, the term generally designated works that were informal or light.

Divertimento No. 11 or Divertimento in D, K. 251, is a composition by Wolfgang Amadeus Mozart. It was written in July 1776 in Salzburg, possibly for the name day of Mozart's sister, Nannerl on July 26th or her birthday on July 30th. The work is scored for oboe, two horns, two violins, viola and double bass.

A Musical Joke (in German: Ein musikalischer Spaß) K. 522, (Divertimento for two horns and string quartet) is a composition by Wolfgang Amadeus Mozart; the composer entered it in his Verzeichnis aller meiner Werke (Catalogue of All My Works) on June 14, 1787. Commentators have opined that the piece's purpose is satirical – that "[its] harmonic and rhythmic gaffes serve to parody the work of incompetent composers" – though Mozart himself is not known to have revealed his actual intentions.