ksandvik
Experienced
And I would think a tuner pedal or a Fractal tuning mode is the right approach in a dark and noisy environment rather than a restring tool (or ears), But it's good practice to learn to quickly tune your guitar during a gig when you hear let's say that the G string is flat rather than stopping mid-stream and tuning your guitar with an electronic tuner (unless you don't need to play at some part of the show). And then fix the tuning later. And yes, long audible guitar tuning during a show does not sound good.