"Chelyabinks" Jews Harp is a Speed Daemon among entry-level instruments. Its mechanics is nearly perfect even comparing to top jews harp and makes striking totally controllable. Vibration amplitude easily controlled too, giving full range of sound volume - it pleasure to play quiet and loud. "Satellite" can be used for simple bidirectional movement training and to most advanced patterns with complex combinations equally. The sound itself is smooth and inclining to use overtones intonation. This model will work best if you want to seriously learn to play jews harp as rhythmic musical instrument.