The idea that the troubadour tradition was created by William after his working experience of Moorish arts while combating While using the Reconquista in Spain is championed by Ramón Guyséndez Pidal and Idries Shah. George T. Beech states that there's only one documented struggle that William fought in Spain, https://arabic-music-institute27152.spintheblog.com/31387350/the-basic-principles-of-music-oud