Brandenburg Concertos had composed over a number of years while Kapellmeister at Köthen, and possibly extending back to his employment at Weimar (1708–17). Bach's dedication to the Margrave was dated 24 March 1721. Translated from the original French, the first sentence of Bach's dedication reads: As I had the good fortune a few years ago to be heard by Your Royal Highness, at Your Highness's commands, and as I noticed then that Your Highness took some pleasure in the little talents which Heaven has given me for Music, and as in taking Leave of Your Royal Highness, Your Highness deigned to honour
Brandenburg Hauptbahnhof Railway from Treuenbrietzen via Brandenburg to Neustadt (Dosse) went into operation in 1904. Today, only the section between Brandenburg and Rathenow is still in use. The Brandenburg Towns Railway had its own station called Brandenburg Neustadt (Brandenburg new town) next to the main station and it later became part of the main station. The West Havelland District Railway ("Westhavelländische Kreisbahnen") line (opened in 1901 and closed in the 1960s) did not reach the main station. The terminus of the route in the city of Brandenburg was at the Krakauer Tor (Cracow Gate) station in the north-east of the town, a