I've been listening to these newer narcocorrido singers, an even more intense permutation of the form. It isn't really my thing but it is good to keep on top of these things, especially the harsher lyrics.
The lyrics, what little I can grab from them, are fairly nasty.
Anyway, I was struck by his combination of both accordion and a banda sound, which is unusual, and had developed this whole theory about the need to really push the envelope by playing all the styles at the exact same time.
But then tonight I was listening to Los Alegres de Teran and on "El dinero es redondo" they have accordion, full mariachi accompaniment, and what really sounds like an organ (though it must be the accordion). Oh well, maybe not so unusual Though it occurs to me that some of this could have been later overdubs even though it didn't sound like it.