Recorder | The Brandenburg Concertos by Johann Sebastian Bach (BWV 1046-1051), are a collection of six instrumental works presented by Bach to Christian Ludwig, Margrave of Brandenburg-Schwedt, in 1721. In the second concerto, the trumpet part is still considererd one of the most difficult in the entire repertoire, and was originally written for a clarino specialist, almost certainly the court trumpeter in Köthen, Johann Ludwig Schreiber.