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

Technical thrash1988

Second genre

Progressive metal1988

Head to headTechnical thrash vs Progressive metal
Technical thrash: heaviness 8, melody 5, speed 9. Progressive metal: heaviness 7, melody 8, speed 6.Heaviness8 / 7Melody5 / 8Speed9 / 6
Each corner is a ten-point rating. The further out, the higher.

The difference, by ear

Progressive metal shares the ambition with cleaner production, clean singing and longer forms. This stays fast, shouted and abrasive.

Progressive metal is sung cleanly where technical thrash is shouted, and much slower: 90 to 180 bpm against 160 to 240. To hear the difference, play Voivod next to Dream Theater. They share a root in heavy metal and arrived in the same year. 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
Technical thrash8
Progressive metal7
−1
Speed
Technical thrash9
Progressive metal6
−3
Melody
Technical thrash5
Progressive metal8
+3

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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Progressive metal

1988 · USA · 3 subgenres

Where it sits

Heavy metal › Progressive metal

In short

Prog rock ambition with metal weight: odd meters, concept albums and instrumental virtuosity.

How it sounds

  • Odd meters and frequent metric shifts, with pieces running eight to twenty minutes.
  • Keyboards in a lead role, equal to the guitar, and highly technical bass.
  • Concept albums with recurring themes and narrative structures.

Key acts

  • Dream Theater
  • Queensrÿche
  • Opeth
  • Tool

Start here

The pickOpeth - Blackwater Park. Growls and acoustic guitar in one song, and nothing forced about it.

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