Elias Fröhlich, editor-in-chief of the Swiss magazine POP took me to the WHO concert (with Golden Earring as support act) on 5th September 1972 at the Mehrzweckhalle in Wetzikon (Zurich)/Switzerland - see https://en.wikipedia.org/wiki/The_Who...
I've recorded 3 songs of the WHO: “I Can't Explain”, “Summertime Blues” and “My Wife”.
It's unbelievable how that little Philips Tape Recorder managed to deliver such a quality…