Good timing for this thread as I was just about to order a pair of didgeridoos and was wondering about a couple of things....
The ones I’m looking at are hand carved bamboo, about 48" with 2"-2.5" diameter and come with the traditional bee's wax mouthpiece.
I see there are some that are carved from teak wood...is bamboo a good choice (I know you can get them in modern PVC pipe too)?
I also see that some sellers have them in specific western pitches...is there any real benefit to that other than really needing a didgeridoo to be in perfect tune/key with your piano...etc?

It seems to me that it's not necessary to buy/play them in specific keys.
One of the reasons I’m going to get a pair, is to have more than one tone flavor. By getting in slightly different diameters, I would think that would be the main cause of differences in the tone....yes?
Of course...the key playing technique...but it doesn't appear to be a very difficult instrument.
Is it hard learning to play it, at least to get basic sounds out of it?
I'm sure the subtle variations will come with time. It appears that the big key to playing didgeridoo well, is learning circular breathing so you can keep it going without sounding like you are just blowing one-directional blasts into a pipe.
I'm going to try and incorporate it into some roots Rock/Blues music...should be interesting. Of course, I would think a didgeridoo is perfect for adding flavor to most any type of "head" music...

I doubt there is anyone that isn't drawn to the hypnotic sounds, and you're immediately transported to a spiritual mood...it's almost a medicinal/healing music.