And one other thing: Stop complaining about A440Hz. For the most part, it is a bad placebo and the old musicians probably had a wide range of different pitch standards which most likely varied depending on the building they were in.

Here's what you should actually be complaining about: Equal Temperament.

Learn what a musical interval is and learn why equal temperament was the worst and laziest fix in music history. We use this tuning system today and I'll give you a few points as to why it is retarded:

The perfect fifth is not perfect

The major 3rd is way off

The tritone is dead center between the octave

They fixed every note in the chromatic scale to be at an equal distance apart from one another because it was easier, not actually better. It made it so every chromatic instrument could play in every key, but they are always out of tune.

A popular tuning system people used back in the day, or in the "old world", was Just Intonation, or Pure Intonation. It takes the root note and tunes the rest of the notes to whole number ratios.

You have heard this tuning system get used unknowingly by fretless instruments and singers. It is naturally what people want to hear whether they know it or not.

The art of intonation control was in large part lost because of laziness. It is a huge subject to master, but it should be worth it in the eyes of musicians.

In relation to intonation and temperament, I'll stand by these words until I die: The guitar is the most flawed and abysmal peasant instrument of all time.