The group of six orchestral works known as the Brandenburg Concertos, commissioned by and dedicated to the Margrave of Brandenburg, are among the greatest works of Johann Sebastian Bach. These are consummate examples of the art of Baroque composition, frequently using groups of solo instruments in a more complex and virtuoso fashion than ever before. The Concerto No. 5, with it's prominent and dazzling harpsichord part, is almost a Harpsichord Concerto in it's own right.