Nu Duo is the music ensemble formed by the collaboration between American bass clarinetist William Hayter and French percussionist Julien Moussiegt, who specializes in unique improvisations crafted for the unique circumstances of each performance, including the audience and environment, in addition to performing composed pieces. The 8th November 2015, Nu Duo and GomA performed at the WTC Art Gallery (Word Trade Center Rotterdam) creating together a unique instant composition inspired in the art works exhibited in the gallery at that moment.