It looks like there is a constant mentioning of Coheed on these forums. And there needs to be even more! I think more Coheed is a must for the Rock Band DLC. Any song is a challenge to any instrument, mainly the vocals and the guitar. But vote for more Coheed and Cambria. Any album or any song. My favorite albums though are In Keeping Secrets and No World For Tomorrow. Both albums are full of amazing music!