The diminished triad is the scale degree everyone tiptoes around at parties. Two minor thirds stacked on top of each other, sounding permanently like it just heard bad news and is bravely holding it together. So naturally, the responsible thing to do is take this poor anxious little chord and drag it through all twelve keys on three strings. You're welcome.
This clip is Exercise #26 from my voice leading series: diminished triads moving through the circle of fourths on the B, G and D strings. One minute of watching three notes crawl across the fretboard as smoothly as possible, changing as little as they can get away with — which, it turns out, is the entire point.
How this diminished triad voice leading exercise works
A diminished triad is a root, a minor third, and a flat fifth — three notes, all a minor third apart at the bottom. When you move around the circle of fourths (C to F to B♭ and so on), instead of jumping to a fresh grip every time, you look for the closest inversion: the shape where the fewest fingers have to move and each note slides to its nearest neighbour by a semitone or a whole tone. That's voice leading. Keeping it on just the B, G and D strings forces you to use inversions rather than escaping to a comfortable open shape, which is exactly the discipline that makes it useful.
The concrete takeaway: stop thinking of chords as fixed grips and start hearing them as three independent voices that each want to travel the shortest distance. Do this drill slowly, watch which single finger actually needs to shift between two chords, and your ear starts predicting the next diminished shape before your hand gets there. Bonus: because a diminished triad is so symmetrical, a lot of these shapes repeat every three frets, so you're secretly learning four keys for the price of one.
Do it slowly enough and the diminished triad stops sounding like a chord in crisis and starts sounding like it's finally in therapy. Want the PDF and Guitar Pro file so you're not reverse-engineering my fingers from a one-minute video? It's all on Patreon.