New playing and auditory sensations:- A very fast and accurate response under bow action in pianissimi, fortissimi, spiccato, sautillé, staccato passages... - Increased possibilities for nuances under the slightest bow pressure - An easy emission in all the positions, which offers maximum comfort and reliability - A perfectly defined elasticity and stiffness which generate depth, density of sound and give the feeling of volume - A rich and clear sound in all the positions all the way up the fingerboard - A perfect balance of sound throughout the instrument range, with an easy transition from string to string. The secret- The alliance of exclusive High-tech materials : a composite multifilament core wrapped with a combination of sophisticated metal wires - Highly reliable accuracy of the manufacturing process guaranteed by laser control - Specific training of workers over several years A level of quality never reached before.The warmth and focus of the best gut strings with the advantages of composite fibers:- The texture, tone accuracy and more upper harmonics - Great lifespan and string capacity to retain its sound qualities - Insensitivity to humidity and variations in temperatureThe string settles in very quickly and offers a perfect steadiness.The sound of the Alliance Vivace is indisputably similar to gut strings.