Bronze Age Acoustic Engineering
The lur is a large, S-shaped natural horn made of bronze, dating to the late Bronze Age, around 1000 BCE. Dozens of these instruments have been discovered, primarily in the bogs of Denmark. Lurs are almost always found in pairs that are mirror images of each other—one curves to the right, the other to the left—and are tuned to the same pitch. This pairing suggests they were intended to be played together, creating a powerful stereophonic sound.
These instruments are evidence of the metalworking skills of Bronze Age artisans. They were crafted using a lost-wax casting method, with the tube often made in several sections that were so perfectly joined they are only visible with X-rays. The walls of some lurs are less than 0.75 mm thick, a level of precision difficult to replicate even with modern techniques. The alloy used was also complex, with different ratios of copper and tin for different parts of the instrument, suggesting an understanding of metallurgy. A typical lur measures between 1.5 and 2 meters in length.