Frederick II, King of Prussia, was a gifted musician who built up a court orchestra noted both for its quality and its size. Great musicians such as Graun, Quantz and C.P.E. Bach were members and contributed hugely to its standing. A patron of the fine arts, Frederick was a highly accomplished flautist whose works, performed in small private concerts, show a remarkable range of forms and expressive effects with slow movements offering long-breathed arcs of melody. The pieces by Alessandro De Marchi, conceived in the spirit of improvisation, provide a revealing impression of contemporary performance practice.