The Cologne Academy and Michael Alexander Willens are undertaking a survey of Mozart’s serenades and other incidental works. Here, the orchestra takes on one of the most famous of the serenades, the Haffner, named after Sigmund Haffner, who commissioned it for the festivities surrounding his sister’s wedding in 1776. A notable feature of Mozart’s serenades is the incorporation of virtuosic solo parts, here performed by the violinist Alexander Janiczek.