Street Performer: Water filled glasses plays Tchaikovsky's Nutcracker: San Gimignano, Tuscany, Italy

San Gimignano in the Region of Siena (Tuscany), this Street Performer plays The Nutcracker using just water filled glasses.
Water glasses, especially pure crystal glasses, have a natural frequency at which they will vibrate. When you rub the rim of the glass, the finger causes additional vibrations.
The glasses filled with water are rubbed by the player's fingers to create the notes. It is played by running moistened or chalked fingers around the rim of the glasses.
San Gimignano is an Italian hill town in Tuscany, southwest of Florence. Encircled by 13th-century walls, its old town centers on Piazza della Cisterna, a triangular square lined with medieval houses. It has a skyline of medieval towers, including the stone Torre Grossa. The Duomo di San Gimignano is a 12th-century church with frescoes by Ghirlandaio in its Santa Fina Chapel. ― Google
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