rock band 3 keyboard and mustang pro guitar compatible with the guitar hero WoR?

Thinking about getting the GH WoR full bundle

Looking at getting some music instruments that work best compatablility wise with both RB and GH games and according to the RB site the GH WoR or World Tour drums/bundle seems to be good.

But if I want to add the RB keyboard and mustang pro guitarto the GH WoR bundle (drums/mic) could I?

Any special attachment do I need.. maybe the madcatz midi adapter thing for the keyboard, mustang guitar, GH drums?

guitar hero doesnt have pro guitar mode or any keyboard mode. theyd only work with rb3

that's fine.. this covered the info on being able to use the GH drums as standard use in RB3 http://en.wikipedia.org/wiki/Rock_Band_3 I just wanted to make sure if they worked with the guitar and keyboard.

I would've just stuck with getting a RB2 bundle but according to http://www.rockband.com/compatibilitythe rock band 2 drums don't support GH games

thanks