The speculation the troubadour tradition was established by William after his knowledge of Moorish arts though fighting with the Reconquista in Spain has actually been championed by Ramón Gentlemenéndez Pidal and Idries Shah. George T. Beech states that there is only one documented struggle that William fought in Spain, https://drill78883.uzblog.net/music-oud-no-further-a-mystery-44888845