VIVACE! means lively, vibrant, luminous. It's a tempo designation in music. And: That's the name of the acoustic system of the Elektra Tonquartier, our new concert hall. It allows us to artificially create any conceivable spatial acoustics – and make them sound natural. At the touch of a button, our hall transforms into the Elbphilharmonie, a recording studio, Cologne Cathedral, or Beethoven's living room...