yes they will but you will not be able to use the pro modes with the old controllers
yes.sure
Yes
I have the Wii versions of both games, and my instruments work fine with rock band 2.
yes they do
yes of course why not
yes
yes
yes if its on the same system
Yes they do. i know from personal experience. i got rock band 2 for Christmas, then i wanted to get rock band 2, so i got just the game. and guess what! the rock band instruments worked! Now that Rock Band 3 is out do the Rock Band 2 drums work or do you need the ones with cymbols?
NO
Yes, all the instruments from the first game work on the 2nd.
Sure can!. Guitar Hero Instrument's work with all Rock band games also.