From the liner notes:
The Indian-born, currently Amsterdam-based American Mehta has expanded the timbral and textural palette of the trumpet dramatically, by opening up a whole cosmos of unheard-of tone colours, microtonal possibilities and subtly shaded noises. Mehta achieves this not only by unorthodox playing techniques and by incorporating the neglected bass trumpet, but also by making use of the "hybrid trumpet", a self-designed instrument in which up to three trumpets (or cornets) are connected by plastic tubing. ... There's more to come, much more
— Peter Niklas Wilson