Multi-Dimensional Virtual Brass: 4 Brass Ensembles – 16 Instruments. Explore New Dimensions in Brass Performances!Vienna Dimension Brass gives an entirely new meaning to the term multi-samples! These instruments have been recorded in a very unique way at Vienna’s famed Silent Stage. While every note was played by a well-rehearsed ensemble of four brass players, each instrument was recorded separately, which allows you to access each voice individually. Still, they sound like an ensemble and not like four soloists, whether playing in unison, divisi, or even in four-part harmonies.