So I was attempting to get the DLC on GH:WT working properly from the SD card, and I tried a few different cIOS choices to see which worked best.
I used Configurable USB Loader (v55) for my testing. Here are my results:
249rev17 - neither the DLC nor the microphone work (IIRC - I might be...
At the end of the concert she rips the foam rubber part of the microphone off and throws it into the crowd a lucky fan snatches it starts sniffing it vigorously!