Procol Harum

Beyond
the Pale

These were the What3Words coordinates:

grumble.youthful.ensemble.persons.surviving.triangle

The locations concerned were: Ostergade, Herning, DK; in the Nevada desert; near Harper, Oregon; and an American house where many dogs live.

Four ancillary clues, of which (only) one is nonsensical
1	Two of the musicians at this gig had not, at the time, appeared on any Procol Harum album	Geoff D and Josh were new members
2	The concert featured a song about ‘maggots crawling’ which had also been tackled three times at the soundcheck	Everybody's favourite, Dead Man's Dream
3	The band on this occasion contained four bassists whose surnames end with the letters ‘rB’	Palpably twaddle. The band has played with two bassists, but surely never four.
4	This was the last Procol concert of the year in question.	It was ... see here

So all competitors presumably wrote down the place and date (11 November 2006) in their daily notes.