Originally part of the orchestral suite No 3 and written for Prince Leopold, Bach's employer in the little principality of Anhalt-Cothen between 1717 and 1723, the 'Air on the G string' arrived in its current popular form over 100 year later, when German violinist August Wilhelm arranged the piece for violin and piano to be played on the evocative G-string of the violin. This arrangement by John Humphries is for Horn in f and Piano.