Just played a round tonight with some people in residence, and I need to commend Harmonix for No Fail Mode - I had never bothered to (or had to) use it in any of my previous group settings, but this one had a lot of newbies and a lack of singers (aka only me). So at the end of the night, when I wanted to sit down at the drums for a bit, I could rock out my Medium "Won't Get Fooled Again" knowing that the guy singing, even though he couldn't hit Daltry's notes worth a lick, could get 35% without worrying about the rockin' stoppin'.