What's the instrument at the beginning of Men At Work's "Down Under"?
They're certainly not rim-shots but it's definitely a mix of two different sounds. The first is the sound of the tom-toms on the drum kit (not played on the rim). The second sound is indeed similar to tuned metal (pipes) but are more probably tuned water bottles (like shown in the official videoclip with the music of the studio recording).
"It was just a little bass riff with some percussion that he played on bottles which were filled with water to varying degrees to get different notes."
This is not conclusive because we still don't know if this is used in the studio but it certainly is an indication.
*"the video of the studio recording"* What video are you referring to? The *music video* certainly isn't a video "of the studio recording."
OK, I see what you mean: I had to write: the video with the music of the studio recording...
A video of the studio recording would have been awesome, as that would be the kind of sourced information I was looking for. But we all know music videos have nothing to do with reality.