Welcome to the Nexus!
Good to know you've been researching this substance. In the end though, and im sure you will agree, no reading or written explanation will actually really exhaust the mystery that can only be experienced by ingesting/vaporizing it
And its not amount of times that solves this issue, so get accustumed to being humbled and letting go to the psychological and metaphysical challenges that will present themselves to you.
I dont know if dmt is key or precursor to a world change, a peculiar joke, brain-chemistry-messer, the ultimate mistery, the key to god or death, a perspective-giver, a gateway to the future or to another dimension or an opening to my subconscious. Or infinite other possibilities. In the end it doesnt really matter, but I have found that for me there are ways to get benefit from it in different levels. I know its not for all but I can only be thankful for having discovered this molecule (and this community)
Just never forget
integration. I think if I could only give one tip to someone regarding psychedelics in general but specially DMT, that would be it.
You didnt mention if you ever took other psychedelics, or if you have any interest in ayahuasca/oral dmt.
Regarding music/setting, I usually preffer full silence and darkness but have made some good experimentation with certain music and nature. Though personally Ive felt music or any sounds is rather hit and miss with vapped dmt, even the same music/sounds can be completely distracting/annoying in one launch or very uplifiting and perfectly conducive in another launch. Do also try silent sometimes if you havent yet. (Safe) Nature can be amazing but I think silent darkness is very special too.
Good luck!