Enter Sandman
The gateway metal riff. Enter Sandman is a masterclass in how metal turns a few notes and the low open E into pure menace. Here's the theory.
The riff — built from a scale
The main riff lives in E minor with bluesy chromatic passing notes (E natural minor plus the ♭5). We don't reproduce the copyrighted riff — light the scale on the fretboard instead and you'll see the pool of notes it's carved from, all anchored to the low open E.
Why it works
Metal leans on power chords (just root + 5th, no third). With no third, a power chord is neither major nor minor — it's pure, heavy and ambiguous, which is exactly the point.
Palm muting the low E gives that tight, chugging engine; letting it ring gives the big open hits. Same notes, different attack — that dynamic is the whole vibe.
Understanding the E minor scale turns the riff from “shapes to memorise” into “a path you can hear” — and lets you write your own in the same style.
Hear it & see it on the fretboard
Open the interactive tool and its Learn a Song tab to hear these chords, watch them light up on the neck, and play the progression in time. Want to check a key by ear? Try the key finder, and brush up on chord progressions.
More song breakdowns
Educational analysis only. We don't reproduce lyrics, sheet music or recordings — chord progressions, keys and scales are shared facts of music theory. Song and artist names are used for identification and commentary; ThunderFret is not affiliated with or endorsed by any artist.
Reading only gets you so far — open the interactive fretboard and watch these ideas light up on guitar and piano.
Enter the toolFrequently asked
What key is Enter Sandman in?
E minor, anchored on the low open E string. The riff draws from the E minor / E blues scale.
Why do metal riffs use power chords?
A power chord is only the root and fifth — no third — so it's neither major nor minor. That makes it heavy, stable and perfect for distortion.