People have passions and desires—a fact that stays true to all regardless of their level of training.
Not even sages and saints were capable of completely severing their own passions and desires.
The thought of bettering oneself was a desire, the want for power was a desire, and the lust for women was a desire as well.
The song seemed to be able to amplify people's desires and bring them to the forefront completely, swaying the emotions of cultivators, robbing people of their self-control, thrusting them into the depths of desires. It even gave birth an elusive realm woven in the minds of the enchanted, rendering them completely under the song's thrall.