FAO: Spacey

http://www.youtube.com/watch?v=fAVxqwiyoQo

I think some of the comments are spot on though.  An oval neck tube would probably be better, the sound could be improved and $3k is WAY too much.

 
I thought the explanation about the shared coefficient of thermal expansion was fun. It doesn't explain that the structure and *massing* of material will effect the dimensional changes attributed to expansion and contraction non linearly.
 
The inference that the system will remain stable, or at least predictable because of material selection, as implied by the premise, will not be experienced. If and when that instrument reacts to a change in heat it will do so in as complex a manner as any other structure.
 
It does introduce the concept though, and can lead to the idea that materials science can be applied in a complimentary way so that any effect of temperature change may be counteracted within the system to achieve a goal of stability.
 
An example of this is the use of expansion joints in a concrete structure. Concrete expands and contracts wildly with thermal change yet it can be juxtaposed with instances of a rubber material that allows a system to function as a stable structure.
 
Enuff about that...
 
 
:-)
 
 
 
 
 
 
 

  I bet the kid's tongue is playing Am on that upright version of the stainless.