If you are an avid qPress fan, you have seen books by Mazas before, notably his book on sight-reading manuscripts. This adaptation is a collection of studies meant to test and challenge your range and endurance on the trumpet.
We are always practicing to increase our range and reduce fatigue, but without material to put it to the test, how do we know how we are progressing? Unless you play regular lead trumpet in a big band, there is not much legit material that can challenge you. Grab these studies and take your technique, fingering, flexibility, range, and endurance for a test.