I play an online game (Overwatch) and I can tell the difference between a 20ms ping and a 40ms one, so I’m not surprised that an extremely proficient musician w

I play an online game (Overwatch) and I can tell the difference between a 20ms ping and a 40ms one, so I’m not surprised that an extremely proficient musician with a lifetime of practice can tell a difference of a few miliseconds. In high school physics we were doing some experiments around pendulums and used metronomes to measure the period; I remember the teacher telling us about a former student of hers, a concert level musician, who could keep a beat in perfect timing without using a metronome at all.