I've seen results from using certain frequencies to help open chakras as well. I'll usually listen to these music videos along with doing mantras and mudras.
Also certain frequencies can serve different healing purposes. 432 Hz is associated with Enki (according to some videos on youtube).
You can listen to music while you meditate, only if you are dependant on it that is bad, one should be able to meditate without music, incense sticks or other probs. I have no info about frequencies regarding meditation, I also did never read a offical statement about it here.
https://templeofzeus.org/Props.php