Asturias (a.k.a., Leyenda). Written by Isaac Albéniz and played by John Williams.
Asturias is one of the most popular classical guitar pieces in history. It was originally written for piano in 1892 and clearly showcases a strong flamenco influence based on its rhythm, harmony, and phrasing. It is unclear who first transcribed it for guitar but most scholars agree that it was either Francisco Tárrega or Severino García Fortea. That said, Andrés Segovia’s transcription is considered the standard and is the most widely played.