With 10-inch pneumatic wheels happily rolling to any Hill locale, the mobile piano features a double kazoo rack, tambourine holder, jug hook, washboard slot, giant umbrella stand, beverage holders, decorative signage, and a safety horn that's also good for flourishes. In nice weather we roll around the Hill cruisin' for a bluesin' and looking for treble. The only other outdoor piano we know of is in Royal Street in New Orleans.