This excellent book contains good, practical information for anyone ready to step up their bass playing game. It's a different flavor of instruction manual, because it is not that at all: it is a guide for those who want to jump right in and play, rather than study. Its concise suggestions and exercises encourage the player to think about how their lines support and enhance their ensemble playing, and how walking a bass line can create subtle and various kinds of interplay in the improv ensemble.
This is a fantastic addition to the more prescriptive bass method books that may already be in your library. A must-have!