I know so many amateur guitar players who spend thousands of dollars buying a great axe, but they won’t spend a few dollars on a regular basis to put fresh strings on their guitar! The one thing that will improve the sound and the heart of your guitar when it sings for you is always making sure you have new strings on the instrument. Dirty strings are dead strings. Dead strings depress you. When you’re feeling disappointed in your musical sound, you practice less, and you avoid playing more.