Known for pushing the boundaries in their music, Montréal-based classical string band collectif9 is forging into uncharted territory with the release of their debut album (see review here), featuring the world premiere recording of Volksmobiles by Canadian composer Geof Holbrook. Formed in 2011 by Thibault Bertin-Maghit, collectif9 is a group of nine classically trained string players who aren’t shy about shaking things up. The members, who met at McGill University and the Université de Montréal, are violinists Yubin Kim, Frédéric Moisan, Grégor Monlun, and Roland Arnassalon; violists Scott Chancey and Xavier Lepage-Brault; cellists Andrea Stewart and Jérémie Cloutier; and bassist…