W.A. Mozart Divertimento No. 11 in D (K. 251) Divertimento No. 11 for oboe, 2 horns, 2 violins, viola & double bass in D major (K.251), by Wolfgang Amadeus Mozart. Note: It's possibly for the name day of Mozart's sister, Nannerl on July 26th or her birthday on July 30th. Date: July 1776, Salzburg I. Molto allegro II. Menuetto III. Andantino IV. Menuetto (Tema con variazioni) V..