Standard tuning is the most common tuning for a six-string guitar, where the strings are tuned to the notes E, A, D, G, B, and E, from the lowest (6th string) to the highest (1st string). This tuning allows for a wide range of chords and melodies, making it accessible for beginners and versatile for various music styles. In standard tuning, the E note is the foundation, providing a reference point for tuning the other strings. Musicians often use electronic tuners or tuning apps to achieve this standard, ensuring their instrument sounds harmonious when played with others or alongside other instruments like the piano or ukulele.