@Lawdog1521 To be fair, Rock Band had its share of exclusive artists. My memory is hazy, but I know The Beatles and Green Day were two. Pearl Jam may have been another, given that their last song--"Even Flow"--appeared way back in GHIII. Possibly AC/DC, though the band has its issues with digital distribution.

@Mr_Big_Boss @lancea34 EA was only the distributor for Rock Band titles. MTV Games was the publisher, and would have been the one making the release decisions along with Harmonix.