I wrote a cool thrash metal riff, and I would love to tell you it came from some deep artistic vision. It did not. It came from wanting an excuse to palm mute so hard that my picking hand starts sending me passive-aggressive text messages by bar four. That is thrash for you: it looks like rebellion, it is actually cardio.
This 28-second clip is an original riff I put together as a self-contained exercise. No solo, no drama, just power chords and palm mutes stacked into a tight, chugging wall of noise that is secretly a really good workout for your right hand.
How this palm mute and power chord exercise works
The whole trick lives in your picking hand. Rest the edge of your palm right where the strings meet the bridge, then pick your power chords so they come out tight and percussive instead of ringing out like a campfire singalong. Move too far toward the neck and you get mush; sit too far back and you choke the note entirely. The sweet spot is a couple of millimetres wide and moves depending on your guitar, your strings, and how much coffee you have had. Metal is precise like that.
Here is the actually useful part: dynamics in thrash do not come from picking harder, they come from muting less. Keep the palm mutes tight and bassy for the chugging, then lift the heel of your hand off the strings for the open, ringing power chords that act as your accents and landmarks. That contrast is what makes a riff sound intentional instead of like a lawnmower. Practise it slowly with a metronome, mute on the downbeats, breathe on the open ones, and watch your right hand actually start to sound like a musician.
And if by the end your palm mutes are tight, your power chords are meaty, and your picking hand is quietly plotting revenge, congratulations: you are doing thrash correctly. Grab the tab and Guitar Pro file, and if you want to fund my ongoing crimes against wrist health, they live on my Patreon.