The Crystal Trio are a Russian group from Siberia who play on special instruments made of glass: the verrophone, the glass harp, and the glass flute. The glass harp is the key instrument used in their performances, and it consists of a series of glasses arranged in rows; they vary in size and in the amount of distilled water present in each glass.
The members of the group are Igor Sklyarov, Vladimir Perminov and Vladimir Popras. We saw them in Venice, Italy, during one of their street performances in the weekend of the annual Venice Carnival. They perform classical pieces, which sound amazing when played on their glass instruments. I recorded a short segment from their street performance, which can be seen here. At the end of the clip, you can see my wife walk toward them. She bought one of their DVDs.