Take three boxes of half a dozen eggs. Line them up along a bench. Balance on the bench and walk across the eggs. The successful recipe for encapsulating an audience in one not- so-easy step.

The three men and one women demonstrate the pure power of the human body, lifting and throwing, holding and balancing each other, using nothing more than each other as supports, props and obstacles to move their bodies around.

But it isn't just a demonstration of power. Every movement is gentle and smooth. Each hold and throw move fluidly into another.

For the first ten minutes the audience sat in stunned silence, too scared to clap for fear of distracting the performers after an early warning to turn phones off - for the performers' safety.

But when those brave enough broke the silence to express their amazement, the rounds of applause came thick and fast.

The encapsulated audience gasped as the daring throws were caught just in time, vocalised their astonishment, then laughed and grimaced or winces as the performance seamlessly weaved through its sections.

And the entire routine is set to a moving soundtrack which expands on the gasps and stunned silence to make Knee Deep a truly moving performance which deservedly got a standing ovation.