If you tend to think that professionals tune a guitar according to a tuner, you are deeply mistaken …
Tuner for the wimps
In fact, the tuner is the least-used thing in the life of guitarists. Of course, it can be used to tune the instrument in less than a minute and do it as accurately as possible. But it often happens that there is absolutely no time to look for it, or to do it is just laziness. Even more often, musicians trust their hearing more than the tuner. And then slightly different methods come into play. What kind?
Piano
Tuner for weaklings, give me a piano and I will tune any instrument for you. A grand piano or a piano is an essential attribute of almost any concert or rehearsal hall. The point is simple - they press the corresponding note on the piano and twist the peg until the sound is the same.
However, if the piano is not tuned, a more "hardcore" method can be used.
Fork
For those who do not know: "A tuning fork is an instrument for fixing and reproducing a reference pitch. In performing practice, it is used to tune musical instruments, choristers, etc." The tuning fork only produces one single reference note - for the first octave (440 Hz). And based on it, other strings are tuned. However, if there is no time at all and you urgently need to adjust the instrument, there is always a third way.
Tuning by ear
This method will work if the scale is adjusted correctly on the instrument. It is often tuned by ear if there is very little time or a lot of time. How to do it? You just need to know the notes on the fretboard and nothing else. For example, the 5th string sounds the same as the 6th string when clamped at the 5th fret. The 4th string sounds the same as the 5th string when clamped at the 5th fret. Have you noticed a pattern? Each string sounds the same as its upstairs neighbor at the 5th fret. But, as with any rule, there is an exception: the 2nd string is the 3rd, clamped at the 4th fret.
