One of the few remaining artifacts of the Alun people of note are the amazing Stone Flutes. These massive stone pillars (generally 6' in diameter and up to 30' tall) pierced with carefully carved holes. Running down the center of the stone (only visible from above the stone), is a long resonating chamber.
When wind blows across the top of the stone the right way, a low tone is created (similar to blowing across a bottle, but much lower in octave). Covering the various holes on the stone will cause slight variations in the tone - if enough are covered then the changes become perceptible enough to produce simple music. It would, however, require a large number of people, carefully coordinated, to 'play' this massive instrument.
Those samples which survive of these artifacts radiate a small degree of magic, though wether this is from their creation, or represent some means of improving their ability remains to be seen. What is known is that no attempt to replicate these structures has succeeded in producing the same quantity and quality of sound.
It is thought that these played an important part in the magical rituals performed by the Alun.