Kitab-i-Aqdas/Elder51

We have made it lawful to you to listen to (singing) voices and to songs. Beware lest listening take you beyond the bounds of good breeding and dignity. Rejoice in the joy of My Greatest Name with which hearts are entranced and the minds of those brought near (to God) are attracted.

We have made (music) a ladder for the ascent of spirits to the highest Horizon. Do not make it a wing (janah) of the self and passion. I dislike that you be among the ignorant.