I HAVE A QUESTION

OK, what is the highest altitude at which a bagpipe will functionally play. Is there a record to be broken here? I did some research and found no mention of altitudinal limitations of bagpipes. However, I know that altitude does horrible things to drone reeds and a friend told me that while there are pipe bands in Denver, even that altitude makes the pipes sound soft and mushy. Beyond this info, I am without a definitive answer. Where is Bill Nye the Science guy when I need him?

If anyone out there has some information on this I would be eternally grateful. In the mean time I'm gonna snow seal my climbing boots and get busy writing the NASA grant to take my pipes into "The Death Zone".