Kristinia DeBarge Keeps Her Mic *Where*?

Here's a clip of Kristinia DeBarge performing her #15-charting semi-hit "Goodbye" on So You Think You Can Dance last night.

I say "performing," because I'm hard-pressed to believe she was actually singing. You can tell she shrieks a couple times overtop a vocal track, but, where was the microphone? I don't see it. Where...

Ohhhh....wait a minute.