Lithophones - prehistoric stone chimes used to make music by cave dwellers. A demonstration of their sound is available on you tube, https://www.youtube.com/watch?v=fRamnKf6OEY
Gregory Porter &The Metropole Orchestra, Full concert, Paradiso. - YouTube Music in collaboration with Radio 6. -Broadcast in the sign of the Radio 6-concert jazz singer Gregory Porter gave together with the Metropole Orchestra in December 2012 in Paradiso, Amsterdam.