What about Hay Bale construction, or Adobe?

I'm going to be constructing my studio no sooner than next summer so I've got some time to plan. I'm a little discouraged at the amount of $$ and effort it takes to get decent sound attenuation. Anyone consider hay bale construction? As I understand it, this is a newer, more environmentally sound way to make small buildings. I'd imagine having 2-3FT of dense hay would provide pretty good sound attenuation. It wouldn't be soundproof, but dense hay would make a pretty good mass. Any thoughts on this? There's also the idea of an Adobe structure. Same idea here, it would reflect like concrete, but it might also block sound like concrete. Adobe and straw bale construction won't work for me because I'm in a wet environment, I was just curious. Seems like the hay bales would be ideal. What about a straight bomb shelter type structure? Concrete everything? Just way to expensive?

hey. yeh, i'm in to earth constructed studio's. i'll probably build in strawbale when i get some land but at the moment i've started plans for a mud brick mix studio in my backyard (bales are too big). into all sustainable elements like passive solar, etc. etc. still studying it but happy to share notes with you, hard to find a lot of info in this area. feel free to mail me if you wish. cheers.

, or rammed earth. what'll happen if you hit the resonant freqeuncy of the wall? sleepwalker, i think you can use bales and adobe in a wet environment, as long as you keep it dry. build the roof first, with long overhangs, build the foundation above grade atleast 8", build concrete curbs for bales to set on, you can seperate the curb and slab to prevent wicking. i've heard experts say to let it breathe, and ive heard experts say to use vapor barriers as long as it is done correctly, and that depends on where you are. Where are you? if you do a search for "bale" you'll find a few topics, and may find some numbers. I think an airspace in the wall assembly would help attenuate the lows, if the thick hay isn't enough.