A peripheral musical structure, with two large keyboards, a running drum, and a system of calibrated keys and pipes in the upper part. Stainless steel construction is covered with wood, concrete, and rubber. There are several playing modes. When just running inside, tunes are played by electronic keys in the upper mechanism. But when there is a touch on the keyboards, different songs can be played together, with the effect of the speed of the running or walking rhythm on the rotating drum—a system of sensors, solenoids, and computerized audio, highly resistant to outdoor conditions.