It starts so smooth, so understated, and really turns out to be a barn burner. His guitar playing is perfect. You can see how he influenced Jimi throughout the track, such a similar style, freewheeling, confident and effortless. Billy absolutely owns this track. When he lets that note ring out about 90 seconds in and then drags it into the meat of the song; brings the goosebumps. Makes you snarl up, get all cock-eyed, and get that side by side front to back head bob thing going.
The damn song is 40 years old and sounds more fresh than anything The White Stripes or The Black Keys (who I like) try to do.