There are many who have suggested that Coheed and Cambria have mastered the hard rock concept album and arguably they have done that better than anyone.  With a progressive metal style covered in intelligent lyrics, Coheed and Cambria certainly created their only little niche in the music world.  That is good news and bad news in the world of the Rock and Roll Hall of Fame as while they meet the innovation category, and while they have done very well in terms of sales and concerts, they might be considered too much of a niche to really gain acceptance.