Garageband Drum Loops used in Guitar Lessons?

In Garageband-> Guitar Lessons-> Learn to Play-> Rock Guitar-> Classic Riffs.
Does anyone know what they (Apple) are using for the backing drums in those Lessons? Are they one of the Apple Loops available in Garageband or are they custom made for the lessons?
I'd like to get the drum tracks used in the Page, Richards and Hendrix riff lessons and use them to record with in a Garageband Project. Thanks

I still wanted to know that the background of drums in these lessons !!