i believe whole heartedly that MDMA changed the way i experience music and i have no doubt it changed for you all also even when not under the influence of mdma.
I also believe that it's not exclusive to MDMA users or those who have used.
there's something known as "estatic listening" the listeners experience tingly vibrations, chills, euphoria known as "frisson" while listening to certain music.
This is very real and some people even swear by its miraculous power and even claim that life itself is sustained through frequencies.....or something.
528hz Love frequencies.
it makes sense that this musical phenomena would go hand in hand w/ the overwhelming feelings of empathy and love that MDMA produces.
This video is pretty informative on the subject - and i like alot of Dr. Len's values and what he's trying to accomplish, but i don't endorse everything he believes especially concerning some of his more specifics in regards to spirituality.