Here's a vid of me playing along with a drumless track of "The Running Free" by Coheed and Cambria. All the drums you hear are me.

This is the RB version of the song which is why you hear the hi-hat count off in the beginning right before the guitar enters.

Q: How did you get a drumless audio track?
A: Practice mode in Rock Band. I have the audio from the game going into the Mix In in the drum brain. Then I have the sound of the drums, along with the Mix In going to my headphones, as well as the line in in my laptop.

Q: What kind of drumset is that?
A: It's a Roland TD-12 with a DW 5000 single bass drum pedal and a Mapex hi-hat stand.
http://tinyurl.com/n9mn8v

Q: Is that the kit you use for Rock Band?
A: Yes. There's a custom controller box that converts the MIDI signals into something the game can understand, much like someguy913's. However, I don't use the cymbals when I play.

Q: Wait, you spent that much money on a drumset for Rock Band?
A: No. I obviously play real drums. And yes, my credit card is still crying from the purchase. (less info)