You know I never listened to opera until this crazy Paul Potts performance. I really liked that aria even without understanding it. After much research I have the translation and it seems to be rooted in Arabic fables like the 'Arabian Nights' all about reading minds and intents. I bought Paul's CD 'Passion'. I guess you like to delve in to the theory of music. Is it the rhythms, sustained notes, the gradual ascending or descending of the notes or random like yet gradual rising notes that provides the uplifting of our spirits? Is there a general pattern to music? What is music to one can be noise to another e.g. an incomprehensible ethnic song could be noise to another ethnic who doesn't understand the language. So is music an acquired taste or cultural?
P.S. You realize that you do need a thesis for both a Master's degree and a Ph.D. For thesis material you could show how how Indian music influenced Spanish music as Gypsies are descendants of Indian travelling musicians from Rajestan in Northwestern India who during the Ottoman Empire ventured into Europe or to Spain during the Arab rule. You could trace the instruments and songs. The stomping of the feet seems very Indian. Or even how Italian opera came into being or German music. Good luck.