ciertamente como ya comento demised, casi todos usan(y usamos :-D) los 2 pies para los blast beat, aunke por ejemplo el bateria de INCANTATION lo hace a un pie, para luego realzar mas los dobles bombos en las partes mas lentas.
los blast a un solo pie son mas propios del grind( carcass, napalm death....), pero vamos ke es total mente indiferente.
Ahora me gustaria poneros un extracto de una pagina ke ahora no recuerdo, pero en la que se comentaban los tipos de blast beat,(creo ke lo sake del foro de la web de derek roddy):
Espero os sirva
I'm not really an authority on blast beats, but I do play them on occasion and I know enough to explain them.
As I understand it, the 'European' blast beat is an alternation between bass drum and snare. Typically it only needs one bass drum (though some play it with two to cut the footwork in half- it's the same number of notes, you just alternate feet) and the high hat (or ride or whatever) is played with the bass drum hit.
So that's:
x------x------x------x------ Hi hat
----x------x------x------x-- Snare
x------x------x------x------ Kick 1
------------------------------- Kick 2
OR (for those with slow feet):
x------x------x------x------ Hi hat
----x------x------x------x-- Snare
x--------------x-------------- Kick 1
--------x--------------x------ Kick 2
The beat doesn't have to start with the hats and kick; you could start with the snare. Most drummers find it easier to start with their dominant hand.
Now the 'American' blast beat (and these geographical designations have long since inter-mingled) follows the 'everything at once' idea. To play said blast beat you simply hit the hi hats, snare, and one of the kicks all at once at a steady pace.
Therefore you get:
x------x------x------x------ Hi Hat
x------x------x------x------ Snare
x------x------x------x------ Kick 1
------------------------------- Kick 2
Or again for those with slow feet (I don't know WHY you'd even bother though):
x------x------x------x------ Hi Hat
x------x------x------x------ Snare
x--------------x-------------- Kick 1
--------x--------------x------ Kick 2
Fancy. Now this sounds way cooler if you add another kick between each of those combined hits in the above figure. This is the most challenging blast beat because you have to keep your hands exactly together, maintain an even alternation between your two feet, and synchronize the two rhythms.
It looks like this:
x------x------x------x------ Hi Hat
x------x------x------x------ Snare
x------x------x------x------ Kick 1
----x------x------x------x-- Kick 2
Now to be fair, you can use the double kick with the alternating (European style) blast beat if you want. It doesn't really sound all that different because every second kick will land with the snare but it's a nice variation.
Such a blast beat resembles:
x------x------x------x------ Hi Hat
----x------x------x------x-- Snare
x------x------x------x------ Kick 1
----x------x------x------x-- Kick 2
The thing to remember about double vs single kick blasts is that neither should be faster than the other. For beginners, the single kick blasts are easier because one foot tends to be more developed than the other. Ideally, your feet should be equal in strength and you should be able to play the single kick blasts with one foot. Try to avoid the 'single kick with two feet' blast. It's a crutch and it cuts you off from really cool proper double bass blasts. When your limbs achieve quality it becomes a trivial matter whether or not you decide to add the second foot and play a double kick blast instead of a single. Geez, I'm such a blast beat nazi.
There you have it. You are all now successful graduates of Blast Beats 101.
Oh yeah, one more thing. Play the above figures VERY FAST.
Soon you will learn to "grind like a motherfucker". Good luck.
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Eso si, el escenario deberia estar en el centro de la sala para que los flipaos bateras se pusieran detras para verle los pies al Kollias y flipaaaaaarrrr 
