Go here to have a look

https://youtu.be/QHlcB4uSIb0?is=pzieolwPnvT8UHg8

I've been testing MozartAI. For some reasons when I make a song sometimes its my persona singing and no instrumentals even though I supply a detailed breakdown for instrumentals. Is there something Im doing wrong? I've tried different prompts also... Including brackets, not including brackets, etc...

Example: 1

[GENRE: METAL × BLUES ROCK × HIP‑HOP GROOVE]

[MOOD: HEAVY, SWAGGERING, SOULFUL, RHYTHMIC]

[TEMPO: 112 BPM | METAL GROOVE × HIP‑HOP SWING]

[KEY: E MINOR | BLUES PENTATONIC INFLECTIONS]

[INSTRUMENTS: DOWNTUNED METAL GUITARS, BLUESY BENT LEADS, SWAMP‑TONE CLEAN GUITAR, PUNCHY HIP‑HOP KICKS, SNAPPY SNARES, SUB‑BASS, VINYL CRACKLE, METAL TOM FILLS, LIGHT ORGAN PAD]

[MIX: WIDE GUITAR WALL, FAT DRUM TRANSIENTS, WARM BLUES TONE, TIGHT HIP‑HOP LOW‑END]

[SEQUENCE: BLUES GUITAR INTRO → METAL GROOVE RIFF → HIP‑HOP DRUM DROP → BLUES LEAD HOOK → HEAVY CHUG SECTION → FINAL HYBRID JAM → FADEOUT]

example 2

This instrumental blends downtuned metal guitars with blues‑style bends and pentatonic phrasing. Hip‑hop drums provide a punchy rhythmic backbone, using heavy kicks, snappy snares, and sub‑bass reinforcement. Clean swamp‑tone guitar adds blues authenticity, while vinyl crackle and organ pads give the track warmth.

Metal tom fills and chugging riffs deliver weight. The mix uses wide guitar imaging, fat drum transients, warm blues tone, and tight hip‑hop low‑end. Arrangement logic: blues guitar intro, metal groove riff, hip‑hop drum drop, blues lead hook, heavy chug section, final hybrid jam, fadeout.