Music Bach, Air on G String High calibrating music at 650. Listen: embedded YouTube video. Brian Gibbs Worldly renunciate on society's fringe and consciousness calibrator at large. You can support Brian and the calibration database project at https://paypal.me/gibbsdesign More posts by Brian Gibbs. Brian Gibbs 23 Jan 2021 • 1 min read cal. 650 Calibration results by Brian Gibbs