Why does plain "nu metal" sound too soft?
Nu metal leans on specific gear and vocal delivery that a genre word alone does not carry: a downtuned 7-string guitar (tuned lower than standard for a heavier, thicker tone), a rap-style verse vocal, and turntable scratches borrowed from hip hop. Without naming these, the model often defaults to a generic rock or alt-rock sound with none of the groove or scratch texture that defines the style.
Naming the guitar tuning behaviour ("downtuned"), the drum feel ("groove" or "thudding"), and the vocal shift (rap verse to shouted or sung chorus) gives the model the four anchors it needs.
What tempo works for nu metal?
Nu metal usually sits between 80 and 110 BPM, slower than thrash or metalcore, with the groove coming from the drum feel rather than raw speed. Slower tempos (76 to 90 BPM) suit sludgy, heavy tracks; faster ones (100 to 110 BPM) suit anthemic, gang-vocal choruses.
| Feel | BPM range |
|---|---|
| Sludgy, crushing | 76-88 |
| Classic groove | 88-100 |
| Anthemic, uptempo | 100-112 |
How do I describe the rap-rock vocal without naming a singer?
Describe the delivery and the shift, not a person. Say "spoken-rap verse vocal" for the talky, rhythmic verse style, and pair it with a contrasting chorus style such as "shouted gang-vocal chorus" or "sung melodic chorus vocal". This tells the model there are two distinct vocal modes in one song, which is the core structural trait of the genre.
If the tool has a lyrics box, keep verse lines short and rhythmic (fewer syllables per line) since rap-style delivery reads better with punchy phrasing than long sentences.
How do turntable scratches actually render?
Scratch sounds are inconsistent across AI music tools since they are a fairly narrow, sample-based effect rather than a broad instrument category. Naming it directly ("turntable scratch accents" or "DJ scratch fills") gives it the best chance of appearing, usually as short, chopped bursts between phrases rather than a constant texture.
If scratches do not come through, try moving the phrase earlier in the prompt (identity and key instruments first) or generating a second take with the same prompt, since results vary between renders.
What does Lyro Music do differently for this genre?
Lyro Music turns a description like "heavy rap-rock song with scratches" into a full prompt with the right instrument and vocal wording, using the free generator at /ai-music-prompt-generator. Tracks with tempo-locked beats, vocal chops or audio input route through ACE-Step 1.5; sung lyrics route through Google's Lyria 3 Pro. Tracks run from 30 seconds to 3 minutes and come back mixed and mastered.
Lyrics skeleton
Original, for structure
[Verse] Spit it low, spit it fast, watch it burn Every word is a wall I can't unlearn [Chorus] Stand up, shout it out, we won't break Every scar is a mark that we all make [Bridge] Quiet now, count the days gone wrong [Outro] Still standing, still holding on
Common mistakes
- Writing only "nu metal" with no instrument words, which fix it by naming the guitar (downtuned 7-string) and drum groove directly.
- Naming a specific band or singer to get the sound, which fix it by describing vocal delivery instead, such as spoken-rap verse and shouted chorus.
- Mixing contradictory moods like calm and aggressive in one prompt, which fix it by picking one dominant mood, such as angsty or defiant.
- Expecting scratches to appear reliably every time, which fix it by naming them directly and trying a second render if they are missing.
- Writing very long verse lines for the rap sections, which fix it by keeping lines short and rhythmic if the tool has a separate lyrics box.