How good does it feel to pull back from time to time? To really shed excess, more-ness, and follow a single path with intention? The exploration of one thing can illuminate corners of the world overlooked by minds pushed in increasingly omnidirectional cycles of want. Tone Keepers is a collection of four compositions by flutist, composer, and sound artist Rachel Beetz that follow a straight line into unexpected territory. Each piece revolves around a simple but inventive technique for generating…