"At eleven o'clock at night I was treated to a serenade performed by two clarinets, two horns and two bassoons -- and that too of my own composition...These musicians asked that the street door might be opened, and, placing themselves in the center of the courtyard, surprised me, just as I was about to undress, in the most pleasant fashion imaginable with the first chord in E-flat."

from Wolfgang Amadeus Mozart's letter to Leopold Mozart (November 3, 1781)