Forming in 1969, this makes them one of the oldest metal bands, only being beat out by Black Sabbath by 1 year. Also they are the currently longest touring metal band, considering Sabbath took a 5 year leave of absence in 2006. Judas Priest only took a 4 year leave of absence from 1992 to 1996.
Other than simply putting out some real quality music, these guys have helped refine the fashion sense of metal early on. They were some of the originators of bringing leather and studs into the wardrobe of metal musicians everywhere.
So this song is one of their classics, but I figured I'd post it anyway. No undiscovered classic, no hidden gem, just one of their solid hits.