Astillero Tango opens the challenge with its music. The sound of Astillero is forceful, vertiginous, breathtaking, raw yet sophisticated: a rollercoaster ride of throbbing accents modulating into earth-shattering pianissimos and beyond. Yet this wild sound is entirely hand-made, free of any gimmicks, 100% acoustic: the sound of just wood and strings, brought to searing life by an acute sense for translating the experience of 21st century urban life into new music, built on a solid traditional foundation of Buenos Aires' tango.