The Copenhagen Philharmonic Orchestra dates all the way back to 1843, making it one of the oldest professional symphony orchestras around. But it's not so old that it can't partake in the contemporary flash mob trend. Earlier this year, they broke out some Ravel's Bolero at Copenhagen's Central Station. Feel free to add it to a playlist that includes Verdi’s La traviata in Valencia, Spain and Handel's Messiah in the city of Brotherly Love. Thanks Bob for sending our way.