Go With the Flow for Trumpet by Eddie Lewis includes twenty-one original flow study etudes tailored to be used with the Daily Routines book. With three etudes for each of the seven levels of the Daily Routine book, the Go With the Flow book begins with simple quarter-note and half-note flow studies limited in range to tuning note C. It progresses to advanced flow study etudes which cover a full professional range. The etudes systematically cover all twelve keys and a variety of time signatures. While the Go With the Flow book was originally intended to be used as a supplement to the more popular Daily Routines, it is also used by some trumpet players as a more musical alternative to a physical trumpet warm-up. Flow studies are a trumpet tradition rooted in the teaching of cornetist Herbert L. Clarke who taught them as moving long tones. They feature mostly step wise motion and are primarily slurred. The purpose of practicing flow studies is to develop greater control of the air-stream.