Was just going to post a graph to show the difference between rms and peak levels, but you beat me to it, RayDunzl.
Nice plot, by the way.
I guess it can not hurt to plot one more of these, they are indeed nice, and shows what is going on with the levels in a very illustrative way.
From a Sheffield Lab recording, you can see that the difference between rms and peak is around 20dB, and most music measures around 15-20dB difference when you look at it like this.
The black line is dB-Z, the dB-C will be a couple dBs lower.
The red peak line does not drop back, it only goes up when a higher peak level is encountered.
It starts at 0dB master volume, this is loud, but with this music it is not excessive, and quite pleasing.
Turning it up to +8dB makes it rather loud.
Increasing the level a couple of dBs, from already kind of loud, changes the whole experience quite a lot.
At around 100-110dB peaks the bass gets tactile, but only subtle.
As you get above 115dB or so, a whole new world of sound opens up, where different instruments and sounds each get their own tactile characteristic.