In the heart of the Joseph Grimaldi Park in London, visitors can find an art installation that marries history, music, and playful interaction.  Titled "An Invitation to Dance on the Grave," this unique piece by Henry Krokatsis invites participants to step or dance on the metal plates of two "musical graves." — Read the rest The post Stepping on graves isn't rude here: London's musical tombstone experience appeared first on Boing Boing.