Rockpedia

Compare

Two genres, side by side. The ratings are editorial judgements on a ten-point scale, not measurements. Where they come out level, the difference is in the prose underneath them.

First genre

Speed metal1981

Second genre

Technical thrash1988

Head to headSpeed metal vs Technical thrash
Speed metal: heaviness 7, melody 8, speed 9. Technical thrash: heaviness 8, melody 5, speed 9.Heaviness7 / 8Melody8 / 5Speed9 / 9
Each corner is a ten-point rating. The further out, the higher.

The difference, by ear

Technical thrash is as fast and vastly more harmonically restless - if the riff keeps changing key and metre, it has left speed metal.

Technical thrash is shouted where speed metal is sung cleanly, and swings further either way: 160 to 240 bpm against 180 to 230. To hear the difference, play Motörhead next to Voivod. They share a root in heavy metal, and speed metal came first, by seven years. United States appears in the origins of both.

Put together from each genre's vocals, tempo, song length, key acts and place in the tree.

In figures

Heaviness
Speed metal7
Technical thrash8
+1
Speed
Speed metal9
Technical thrash9
level
Melody
Speed metal8
Technical thrash5
−3

Speed metal

1981 · Germany / USA

Where it sits

Heavy metal › Speed metal

In short

NWOBHM with the throttle down, but the vocals still melodic. The missing link between heavy metal and thrash.

How it sounds

  • Tempos of 180 to 220 bpm with galloping or two-beat drumming.
  • Fast palm-muted riffing, but with vocals that stay melodic and high.
  • Long solos with NWOBHM-school technique.

Key acts

  • Motörhead
  • Exciter
  • Agent Steel
  • Helloween

Start here

The pickMotörhead - Ace of Spades. Thirty-five minutes, constant speed, zero compromise.

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Technical thrash

1988 · USA / Canada

Where it sits

Heavy metal › Thrash metal › Technical thrash

In short

Thrash with dissonant chords, odd meters and bass up front. The bridge between thrash and progressive metal.

How it sounds

  • Dissonant chords and unusual intervals, with the bass in a contrapuntal role.
  • Odd meters and structures that never repeat.
  • Riffs assembled like puzzles, demanding high individual technique.

Key acts

  • Voivod
  • Watchtower
  • Coroner
  • Atheist

Start here

The pickVoivod - Nothingface. It includes a Pink Floyd cover that makes perfect sense.

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