Yes
Yes, you can. I'm not sure of the Rock Band 1 instruments, but Rock Band 2 instruments for sure...
You can play band hero instruments with rock band 2.
No. Lego Rock Band Does not come with Instruments.
yes.sure
Yes.
yup.
yes you can
you should be able to
Yes
yes
No unfortunately the instruments for rockbands are platform specific.
yes of course why not