Here's a link to Didgeridoo:
The rest of MCMXC a.D. is more of the same, just done a little differently. Callas Went Away has its piano and operatic wailing, Mea Culpa it's interesting guitar solo, and Knocking on the Forbidden Door it's wild animal cries.
Back to the Rivers of Belief is the other somewhat intriuging song, but it has exactly the same drums as the earlier Sadeness. Michael Cretu, head guy behind Enigma, provides vocals for the later part, and they surprisingly fit in well, but there is a heavy sense that this Belief is just a poorer version of Sadeness.
I enjoyed MCMXC a.D. enough that when I saw it cheap, I got it, but I wouldn't pay a lot. It's still by far the best New Age album I've heard, but really, there isn't a lot of competition, at least in my opinion.
Here's a link to Sadeness: