Was Stonehenge built with ‘singing’ stones?

Research indicates that the Neolithic monument has a ‘musical’ purpose 

The Royal College of Art in London has been spending months tapping stones in the Preseli Hills, the source area of some of the stones used in Stonehenge, to see if these stones have ‘musical’ qualities.

After striking 1,000 rocks in Carn Menyn in the Preseli Hills in Wales, the researchers have found that the bluestones ‘sing’ when they are hit, resonating with an apparently unique twang that does not appear to reach the same pitch or musical note as other stones which make a thud noise.

Paul Devereux, the study’s co-leader, says: ‘We found a significant percentage of the actual rocks making metallic sounds like bells, gongs, tin drums when tapped with small handheld ‘hammers’.' [...] Classical-Music.com

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