inRadium gives you 8 instruments and 25 styles — that's 200 starting points before you've even touched the prompt box. This guide helps you skip the guesswork and reach for the combination that actually fits your track.
Start with function, not instruments
The first question in any arrangement isn't “what sounds cool” — it's “what job does this part do?” Is it laying a rhythmic floor, filling the harmonic middle, or singing a hook on top? Decide the role first, and the instrument choice almost makes itself.
The 8 instruments and what each is for
| Instrument | Its job in the track | Reach for it when… |
|---|---|---|
| Drums | Rhythmic foundation | You need groove and momentum — usually the first move. |
| Bass | Low end & harmony anchor | The track feels thin or rootless under the chords. |
| Acoustic Gtr | Organic rhythm / texture | You're after folk, singer-songwriter or warmth. |
| Electric Gtr | Drive, riffs, color | You need rock energy or a melodic hook. |
| Piano | Harmony bed or lead | Pop and ballads — a do-everything backbone. |
| E-Piano | Warm harmonic bed | You want R&B, soul or neo-soul vibes. |
| Strings | Atmosphere & lift | You're swelling into a chorus or adding emotion. |
| Synth FX | Tension & modern color | Electronic, cinematic, or ear-candy moments. |
A build order that rarely fails: Drums → Bass → a harmony instrument (Piano / E-Piano / Gtr) → a topping (Strings / Synth FX).
Let style set the mood
The same piano part grooves completely differently under Pop versus Soul. Rather than jumping straight to an exotic style, make a take in a neutral style first, then compare 2–3 neighbouring styles and keep the one that matches the feel of your reference recording.
Two takes and a prompt: your secret weapon
Every generation gives you two versions — don't settle for the first one you hear. Pair them with a short prompt describing brightness, era and character, and your hit-rate climbs noticeably:
- “bright modern pop, tight punchy drums”
- “warm vintage soul, mellow electric piano”
- “cinematic strings, slow emotional build”
Run a few combinations, keep what works, and you'll quickly build a recipe library of your own.
Max unlocks all 8 instruments plus HD-quality renders — room to try every pairing.
See plans & credits
