The "e string" is a type of string used in musical instruments, particularly in stringed instruments like the guitar and violin. It is typically the thinnest string, producing the highest pitch when played. In standard tuning for a guitar, the e string is the first string, while in a violin, it is the fourth string. In addition to its musical role, the e string can also refer to the E major scale, which is often associated with bright and vibrant sounds. Musicians frequently use the e string for melodies and solos, making it an essential component of stringed instrument performance.