Streams or jets of water rain down or find a path from drum to drum making music as it goes. A complex enough design could make some pretty catchy music. Designated places to throw coins make it an interactive musical experience and also some money for the park.-- sartep, Jul 11 2004 Sounds excellent.-- cromagnon, Jul 11 2004 lovely! do the sounds coming from a steel drum alter with an increase in size? I imagine this is much bigger than your bog standard steel drum.-- po, Jul 11 2004 random, halfbakery