This is what happens when you are in perfect tune. There are two tools you can use when tuning your guitar. One is an electronic tuner, the other is your ear. Tuning by ear is far more important because you must be able to recognize different pitches in sound. This is essential to being a musician.
Ear training takes time.
Don't get discouraged because you can't tune by ear in a week. Your brain needs to get familiar with the notes in music. I want to share a few different ways to tune your guitar. The first is the most standard. In this method, you are matching the notes exactly to get the proper tuning.