Andreas Vollenweider?

I recall seeing Andreas at a theater with the best acoustics I have ever heard. We were seated center mezzanine; it was like being in the center of a huge speaker.
The performance Andreas and his aggregation put on was so mesmerizing; each musician played several different instruments. Andreas played two kinds of harps and a koto. The percussionist had such a vast array of bells gongs and "tinkly" sounding things he could hardly be seen. That evening went far too fast.