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RHY.3:3 - Forces
| Force | Practical tension |
|---|
| Continuity and differentiation | A performance may need a sustained contribution and recognizable changes within it. |
| Several techniques can realize one effect | Pressure, trajectory, speed or division between performers can produce different costs and textures. |
| Local success can disrupt continuation | A strong accent may leave no workable preparation for the next one. |
| Perceived and physical results differ | A smooth trajectory need not produce a continuous sound or a usable partner cue. |