Top 10 Speed and Power Metal Songs by Deep Purple and Rainbow

1972. This song is the the ultimate driving song of all time for obvious reasons. But it was more important than just being a great driving song:

1) it contains the first true metal guitar solo
2) it contains metal type of vocals and screams
3) it contains the first use of tremolo picking in a metal-related song: tremolo picking became a must in extreme metal, mostly black metal and death metal, but also power and speed metal.

1970. The mighty beginning... Later Iron Maiden also based many of their songs on gallops. The rest is history.

This song is pure power metal. It has all typical power metal features: from the drum beat to the vocals and riffs, not to mention that melodic anthemic chorus. Anthemic choruses are one of the focal points in power metal.

Pure power metal before Helloween.

Epic power/symphonic metal from 1979. The first proto-symphonic metal song.

This song was like 20 years ahead of its time. Power/symphonic metal began to rise in the late 90s.

This songs of 1971 has double bass drumming. What metal would be without fast double bass drumming? Because almost the entire metal is fast, not only speed metal.

Again, this is a power metal song. Even the album cover has a dragon on it - the symbol of power metal.
In 2006, Blind Guardian named their album A Twist In the Myth, their album cover also had a dragon on it and it was also green-ish.
I'm not sure at all if Blind Guardian were inspired by this song/album, I just shared my observations. My point here actually was that Deep Purple had more power metal in their discography than most people would imagine - power metal was there in terms of music, lyrical themes and symbolism.