The one thing I've stuck with in terms of depth is acoustical/rhythmic driving. A consistent, bass heavy, repetitive, (maybe even melodic) piece. Primarily the first 3 of the 4 things there.

Vocals within the piece can work, but ime they have to be specific, or it can throw off the repetitive, driving force of the whole thing. Female vocals work wonders. Highly preferable.

I know some folk are not into the music/dmt thing and prefer silence. Totally understandable, and in no way am I talking against that method. Both can end you in the same place at the end of the day ime, so take what I say as what you will.

The repetitive driving sound of the music has helped anchor me down during.

If you've ever seen the old 90s movie Twister (a very cheesy movie), about the tornado, there's one scene where the two main characters go to run from the tornado near the end of the movie, they end up running to this old ground cellar, fastening themselves to this stationary metal pipe. The tornado comes right over head, rips open the cellar doors, the doors go flying, the wood, the cellar contents - all go flying. But they stay right there, holding on for dear life, trying to stay focused, all the while everything is being ripped to pieces.

That's really the only analogy I can put to it. At least that's how it's been for me more/less over all these years of taking dmt/changa.

I think there's good reason for the rattles, flutes, the icaros, and percussion that can be used in these indigenous circles who use these plants/substances. These things can be used to take you out've a bad place, they can be used to take you out've a good place, they can be used to repurpose you, they can be used to anchor your attention so that you don't become lost in the lunacy and chaos of it all - if those two things were to show themselves during.

This is just what I'd experimented with over the years, personal experience/opinion.