This was the beginning of d.notive's set.  It started with a bit of an intro before segueing into "Vicious Lies" (which, as I found out, wasn't quite over when this video ended; after detouring for a short bit, he came back to the chorus to wrap it up; oh, well).  As you can tell, everyone went nuts when his keytar strap started lighting up.  Overall, his set was awesome, as was the rest of the concert (and the next night's concert).  He performed "Let Your Mane Down", "It's Not Over" (with Equestrian Strumpet taking Feather's part), and "Becoming Popular (1987 House Mix)" for his set (and maybe another I'm already forgetting).

Sadly, I had forgotten my SD card at home and didn't get a chance to pick one up until the next morning, so this was recorded on my phone.  :(