You may not know who LCD Soundsystem is, but the important thing is, a lot of music fans do, and they were buzzing about a show by the band in Pomona on Monday, a semi-secret show that drew 1,700 to the Fox on only three days’ notice. Was this the most talked-about cultural event of 2016 for the Inland Valley? Time will tell, but maybe. My Wednesday column tells the story.

Above, two photos before the concert; below, two photos after. So many people!

Videos of many of the songs from the concert have been uploaded from fans’ phones. Here’s one: “Home.” Oh, and “This is Happening,” referenced in the headline, is the title of their third album.