Lesson 6 of 9 · about 19 minutes
Prompting Songs in MusicStudio and Cleaning Them in SoundStudio
You'll be able to
- Describe the parts of a strong style prompt: genre, instrumentation, tempo, mood and exclusions
- Explain how section tags help a music model follow a set of lyrics
- Pick the right MusicStudio mode and studio tool: extend, remix, region edit, single track or stems
- Follow SoundStudio's workflow for cleaning an AI-generated song and mastering it to a streaming loudness target
A music model gives you the most probable song for your words. Vague words get the most probable song in the genre, which is the song everyone else got too. Specific words narrow the target. That is nearly the whole craft of prompting, and the rest is knowing which tool to grab when the result is 90 percent right.
Anatomy of a style prompt
| Part | Weak | Strong |
|---|---|---|
| Genre and era | folk | 1970s country-folk, Bakersfield touch |
| Instruments (2 to 4 leads) | guitar | fingerpicked acoustic, pedal steel, upright bass |
| Rhythm and tempo | medium | shuffle, 96 BPM |
| Key or mode (optional) | G major | |
| Mood and arc | happy | warm, wry, builds a little into the last chorus |
| Vocal | singer | weathered male baritone, close, dry |
| Production | live room, minimal reverb, no autotune | |
| Exclusions | no synths, no electronic drums |
Mureka's own FAQ suggests a simple starting set of style or genre, mood, and a scene or use case, and says the model is especially strong at blending styles. Voice Studio's MusicGeneration tips add the emotional arc and the intended use. "For a podcast intro" is a surprisingly strong instruction, because it implies a short, steady piece with a clear start.
Exclusions need care. MusicStudio's Style Builder lets you click a chip once to include it and again to exclude it, and the page explains what happens next: Mureka has no negative-prompt parameter, so exclusions are written into the prompt as plain instructions such as "no drums, no synth." That steers hard but is not an absolute filter, and excluding a whole family (all synths) works better than one narrow instrument. Suno handles it differently, with a separate Exclude field under Advanced Options. Either way, expect the occasional stray synth pad.
Lyrics the model can follow
MusicStudio's Song box takes up to 5,000 characters, with buttons that insert [Intro], [Verse], [Pre-Chorus], [Chorus], [Bridge], [Break] and [Outro]. Lyrics written by a person matter for ownership, as lesson 8 explains. Here is an invented example in the shape a model handles well:
[Verse] The mill shut down in ninety-one We kept the whistle anyway It blows at noon for no one now And no one asks it not to [Chorus] Ring it out on Mercer Street Let the old brick hear it We were here, we were here Ring it out on Mercer Street [Outro] We were here
Some habits that help:
- Short lines. Six to nine syllables sit on a melody more easily than fifteen.
- The hook repeated exactly. The model recognizes a chorus partly by repetition.
- Numbers as words. "Ninety-one," as in narration.
- Stage directions in the style prompt. Words in the lyrics box tend to get sung.
The page also offers "Write with AI," which uses Mureka's lyric writer and returns a title with the words, and "Extend lyrics." They are fine for drafts. AI-written lyrics weaken any claim to authorship of the song, which is why many songwriters treat them as scaffolding to replace.
MusicStudio's engine settings
| Setting | Choices shown on the page | Guidance |
|---|---|---|
| Mode | Lyrics to Song; Prompt to Song (AI writes lyrics); Instrumental (no vocals) | Instrumental for beds; Lyrics to Song for anything with words you wrote |
| Model | Auto; mureka-9.5 (newest, best fidelity); mureka-9; mureka-8 (needed for head or tail extend); mureka-o2 (reasoning, no voice or melody input); mureka-7.6 (legacy, widest feature support) | 9.5 for finals; 8 if you plan to extend |
| Variations | 1, 2 or 3 songs, billed per song | 2 is the sweet spot: a real choice for twice the cost |
| Vocal gender | Auto, male, female | Set it; Mureka's FAQ says an audio reference overrides it if both are given |
| Conditioning | Reference, voice, melody, instrumental reference | Melody cannot be combined with a reference or a voice |
The style prompt box holds 1,024 characters and rebuilds itself from your chip selections until you type in it, which locks your wording. Presets save every chip state plus tempo, key, time signature, engine settings and notes, so a series can keep one sound.
The Studio tab: fix instead of regenerate
| Tool | What the page says | When to use it |
|---|---|---|
| Extend | Grow a song forward from the end or backward from the start; head extend needs mureka-8 | The bed is 48 seconds and you need 60 |
| Remix | Re-record the same song in a different style; instrumental sources not supported | Same song, acoustic instead of full band |
| Region edit | Rewrite one stretch, at least 3 seconds, and leave the rest alone | One bad line in verse two |
| Generate a single track | Add one part, such as vocals, bass, drums or brass, to an existing recording | Add a bass line under your own guitar demo |
| Split into stems | v1: 5 stems, WAV only; v2: up to 12 stems plus MIDI; v3: vocal plus accompaniment, WAV plus MIDI; results as a ZIP | Lower the vocal under narration; fix a click on one part |
| Analyze | Describe instruments and tags; recognize lyrics and timings; transcribe to sheet music (MusicXML and PDF) | Checking what you got, or getting a lead sheet for a live band |
The Voices and References tab can also clone a singing voice from 15 to 30 seconds of clean solo singing, with the page's own reminder to use voices you have the right to use. That means your own voice, or a singer who agreed in writing. Lesson 7 covers why.
Two housekeeping notes from the page. Songs stay addressable by ID for about a month, and the Library warns that Mureka's audio links expire about 30 days after generation, so download anything worth keeping. And the Console tab logs every request with the reason for any failure, which tells you whether the problem was your input or the API.
Worked example: editing on the beat
Your bed is 92 BPM in 4/4 and runs 71 seconds. You need about 60.
One beat: 60 / 92 = 0.652 seconds. One bar: 4 x 0.652 = 2.61 seconds.
Cut length needed: 71 - 60 = 11 seconds. 11 / 2.61 = 4.2 bars. Musical edits sound right on whole bars, so cut 4 bars: 4 x 2.61 = 10.4 seconds, leaving 60.6 seconds.
Find a repeated section, place the cut on the downbeat of a bar, delete exactly 4 bars, and crossfade over a few milliseconds. The listener hears the song repeat one fewer time. Nobody hears the edit.
Cleaning up in SoundStudio
SoundStudio's theory page has a section for exactly this job, 15. Cleaning up an AI-generated song. Here is its workflow, with reasons:
- Get the best file. Download WAV if the service offers it. The theory page notes that Suno downloads are often MP3 and advises exporting your edit as 24-bit WAV and making an MP3 only at the very end, because re-encoding stacks damage.
- Listen first, all the way through on headphones, noting times of anything that bothers you.
- Clicks: Noise tab, Find Clicks with the detector set to Suno ticks, then again with Spikes above the outline. Review the strongest first, use Fix This Click on the real ones, and the Spike Pen for ones you can see that the detector missed.
- Hard spots: if a click is buried in a busy chorus, separate stems in the Helper tab, fix it on the vocal stem where it stands out, then use Mix Files Together. The help page says stems added back at 0 dB rebuild the original mix.
- Timing: shorten an overlong held note with Smooth Cut; remove a bar or repeat with a plain delete at a beat, crossfaded.
- Tone: only if needed. A gentle low cut at 30 Hz and small EQ moves, since AI songs usually arrive already mixed.
- Loudness: Enhance tab, target -14 LUFS, -1 dBTP ceiling, and read the report. Export a 24-bit WAV master, then MP3 320 or FLAC to share.
Why -14 LUFS? Spotify says it normalizes tracks to -14 LUFS by default and recommends keeping true peak below -1 dBTP. The theory page makes the practical point: a song squashed to -8 LUFS just gets turned down by 6 dB and sounds flatter than one mastered at -14 with its punch intact.
Reporting angle
When a song or jingle turns up in a campaign, ad or event, ask whether it was generated, and with which service. Ask for the prompt and the account's terms for that tier, since the rights a paid plan grants differ from a free one. Check the claimed loudness and release specs against the file itself: streaming services such as Spotify normalize to about -14 LUFS, so a "mastered" claim is something you can measure. Ask what was cut or fixed by hand, because each regenerated variation is billed and leaves a trail in the account history.
Research angle
Common mix-ups
- Claim: Longer prompts always work better. What the evidence shows: Specific beats long. Ten precise words outperform a paragraph of synonyms for "epic."
- Claim: An exclusion guarantees the instrument is gone. What the evidence shows: MusicStudio's page says Mureka treats exclusions as instructions, not filters. Check, and use stems to remove what slips through.
- Claim: Regenerating is cheaper than editing. What the evidence shows: Each variation is billed. A region edit or a 4-bar cut fixes one problem without gambling on a whole new song.
Check yourself
1. MusicStudio's Style Builder lets you exclude an instrument. How does Mureka treat that exclusion, according to the page?
The page says Mureka has no negative-prompt parameter, so exclusions are written into the prompt as plain instructions. Excluding a whole family works better than one narrow instrument.
2. At 92 BPM in 4/4 time, how long is one bar?
One beat is 60 / 92 = 0.652 seconds. A 4/4 bar is four beats: 4 x 0.652 = 2.61 seconds.
3. You love a song except for one line in the second verse. Which MusicStudio tool fits best?
Region edit replaces the lyrics in a chosen stretch of a finished song. Remix re-records the whole song in a new style.
4. Why should you download MusicStudio songs you want to keep promptly?
The Library tab warns that Mureka's audio links expire about 30 days after generation, and songs stay addressable by ID for about a month.
5. In SoundStudio's AI-song workflow, a click is buried in a busy chorus. What does the theory page suggest?
Stems isolate the vocal, where the click is easier to see and repair, and Mix Files Together rebuilds the song.
6. What loudness and ceiling does SoundStudio's theory page give for mastering a cleaned AI song for streaming?
Section 15 says Enhance tab, target -14 LUFS with a -1 dBTP ceiling, matching Spotify's normalization reference.
Terms in this lesson
- Style prompt
- The text description of genre, instruments, tempo, mood and production that steers a music model, separate from the lyrics.
- Section tag
- A bracketed label such as [Verse] or [Chorus] in lyrics that tells the model where a part of the song begins.
- BPM
- Beats per minute, the tempo of a piece.
- Region edit
- Regenerating one time range of a finished song, often with new lyrics, while keeping the rest.
- Smooth Cut
- A SoundStudio edit that shortens a held note by a chosen amount without an audible jump.
Sources
- MusicStudio (Journal Tools) checked 2026-10
- SoundStudio audio theory: 15. Cleaning up an AI-generated song checked 2026-10
- SoundStudio audio theory: 5. Loudness checked 2026-10
- SoundStudio help (stems, Mix Files Together, Find Clicks) checked 2026-10
- Mureka FAQ (prompt advice) checked 2026-10
- Suno Help: How do I exclude elements of a song? checked 2026-10
- Spotify for Artists: Loudness normalization checked 2026-10