Tension in Istanbul's Taksim Square were eased slightly on Wednesday when a German pianist played for the gathered crowds. Davide Martello plans to play his piano in all the world's capitals and calls himself a klavierkunst - or piano artist. Surrounded by protesters wearing masks he enthralled the crowds, but many of those listening said they still feel unsafe and wary of a police raid. The mini concert played with a piano on top of a truck ended as protesters went back to the park.
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