Let’s talk about the “harmonic” method of tuning. Most people know that using the 5th and 7th harmonic to tune doesn’t work. I still walk into guitar stores and see a salesman tune a guitar this way. The only “pure” harmonic is the octive. The 5th and 7th harmonic will be as much a 3 cents off when you use them to tune. And it is accumulative, in other words when you tune this way each error is added to the last. Believe me it doesn’t work. Comments or questions?
