Not only does Asian rock and pop not use microtonal tuning or nonstandard temperament, some of the producers or musicians may be the same people you`re hearing on your favorite chart toppers at home. I`ve seen pop artists from India, Vietnam, Sri Lanka and Indonesia live-you or me could jam with them. If you look up exotic scales, almost all of them can be played on a standard tuned rock guitar. There are instruments which can be easily tuned away from the tempered (diatonic) scale-the sitar is maybe the best known. But there is an equivalent of Solfegio (do re mi) in Indian music, the pronunciation is different. You have to check out folk music to hear the original sounds.