The speculation that the troubadour tradition was created by William just after his experience of Moorish arts whilst fighting with the Reconquista in Spain has been championed by Ramón Menéndez Pidal and Idries Shah. George T. Beech states that there's only one documented battle that William fought in Spain, https://trevorjvgue.bligblogging.com/31600897/the-5-second-trick-for-arabic-music