Sound — 9
This is the true crossing point between "Unsustainable" and "Survival". It has the electronic elements from "Unsustainable", and all of the melodic and ballad elements from "Survival", along with the occasional Queen-esque choir vocals. This is the song people will be humming on their daily walks.
Lyrics — 8
The lyrics were awesome on this song, but I'm kind of unsure of how well they fit with the melody of the music. It was definitely interesting to many open-minded listeners, but I'm not sure how well the long time hard-core fans will respond. The singing in itself is spectacular. Some people complain about Bellamy's voice, saying he moans instead of singing, but he proved them wrong here.
Overall Impression — 9
Does "Madness" compare to other Muse material? No, it doesn't in any way. However, that doesn't mean that it isn't good. It is actually very good. It's just way to different from any other Muse songs to even compare them. I am a true Muse fan, and I can say that I love the newest Muse material, including "Unsustainable". And this just goes to show how diverse Muse can be. That's really what they are trying to accomplish with "The 2nd Law", and I like it.