The best words to describe Blood are epic rock. In the early seventies, at the height of prog rock, this could easily have taken up one side of an album. Forty years later and The Dears can condense all of those ideas into four minutes, obviously without a ten minute guitar solo, although there are some knarly guitar licks.
The Dears formed in Canada 15 years ago and are no strangers to critical acclaim, it's easy to see why. Blood is released from their fifth album Degeneration Street and the track is available for free download. The link is attached and all you need to do is enter your email. Sounds like a bargain to me.