My music on The History Channel

THE MASTER: Samurai Sword Master
The samurai were the members of the military class, the Japanese warriors. Their importance and influence grew during the Heian Period (794-1185) when the powerful landowners hired them for the protection of their properties.
THE MASTER: Master Of Castles
Famed architect James of St George perfected the art of castle building. Military experts and architectural historians analyse what made these castles so formidable.
And also; MASTER Gun Maker - for which I can't find any further details.