Yes, we've had a thread about him, I'm almost certain. I recall discussion of the post effects.
He's nice, though without FX is more interesting for me. But he hardly took the bando out of its traditional home and showed it could be a classical instrument. That was its original use in Germany, as a portable organ for Bach and other classical level church repertoire. Classical has always been and is still played on bando in Europe albeit not as widely as CBA or PA.
The Argentine tango masters are no slouches at classical, either. Don't forget that tango arrangrment and orchestration became almost classicalized in sophistication and complexity at a certain point. They have conservatory training for bando there.
Here is Gabriel "Chula" Clausi, who was still performing in his late nineties before his passing in 2010. His LP "Concierto de Bandoneon" went through more than one LP issue many decades ago plus a CD version. It included Beethoven, Bach Inventions, Schumann, Chopin, and this:
m.youtube.com/watch?v=xKBwDwQULck&pp=ygUOR2FicmllbCBjbGF1c2k