Smart Controls & Song Structure

Guide generation with genre, mood, and texture controls, musical parameters from key to BPM, and explicit song sections for full arrangements.

DocumentationSmart Controls

Parameters

Smart Controls

The parameter panel adapts to your current workflow with two states. When no MIDI is loaded, you see controls for fresh generation. When MIDI is present, the panel switches to editing and refinement controls.

State A: Fresh Generation

Quick Params with no MIDI loaded. BPM and Bars read Auto until you set them.

When starting from scratch, you can guide the AI with:

Genre (16 options)

Pop · R&B/Neo-Soul · Jazz · Lo-Fi/Chillhop · Pop Ballad · Cinematic/Film Score · Trap/Hip-Hop · Classical · Blues · Rock/Alt-Rock · Funk/Soul · Gospel · Bossa Nova/Latin · Ambient/New Age · Ragtime/Boogie · Electronic

Mood (13 options)

Happy · Sad · Dark · Dreamy · Energetic · Nostalgic · Tense · Peaceful · Romantic · Angry/Aggressive · Melancholic · Triumphant · Mysterious

Texture (4 options)

Chords only · Chords + melody · Bass + chords + melody · Melody only

Electronic Subgenres

Electronic covers a lot of ground, so Aether reads your prompt for a subgenre and writes to that style specifically: its tempo, its groove and its structure. Say what you want and you get it; say nothing in particular and you get house.

Say something likeYou getTempo
deep house, tech house, offbeat pianoHouse: offbeat stabs, continuous groove, no drop120 to 128
big room, festival, mainstage, EDMFestival: build and drop, octave-jump lead126 to 130
trance, upliftingTrance: rolling 16th bass, long breakdown136 to 140
techno, warehouse, melodic technoTechno: hypnotic, minimal harmony, no hook130 to 140
drum and bass, DnB, jungle, liquidDrum & Bass: breakbeat, rolling bassline172 to 176
dubstep, riddim, half-timeDubstep: half-time, heavy and spacious138 to 142
UK garage, 2-step, UKGGarage: swung, skippy, broken beat130 to 135
downtempo, trip-hopDowntempo: broken beat, unquantised, textural90 to 110

Naming a Genre in Your Prompt

You don't have to use the Genre menu. Mentioning a style in the message itself (“a slow jazz ballad”, “liquid drum and bass”, “a Chopin nocturne”) selects it just the same. The Genre menu wins when you have set it, so leave it unset if you want your words to decide.

Naming an artist works too. Aether recognises a wide list of artists as shorthand for the style they are known for, so “something like Four Tet” lands in downtempo electronica and “a Skrillex-style drop” lands in dubstep. It reads whole words only, so “popular” never triggers Pop and “greenhouse” never triggers House.

Your own language works too. “musique classique”, “klassische Musik” and the Japanese, Korean and Chinese names for a genre all reach the same place as the English one. The same is true of drum styles on the Drums tab. Not every style has a name in every language; where one is missing, the menu still gets you there.

And it answers in the language you wrote in. The reply, the composition plan and the rest of the chat come back in your language rather than English. What Aether writes is unaffected: the key, the scale and the drum piece names stay in their standard form, which is why the drum map in the example below still reads Kick, Snare and Closed Hat underneath a plan written in Korean.

Two prompts, two languages. The German one asks for chase-scene film music and is planned in German, with the key still written as D minor and the layers still named Strings, Contrabass, Low Strings and French Horn. The Korean one asks for a reggae beat and is planned in Korean, with the drum map keeping its standard English piece names. Click either to read it full size.

Genre Sticks Across the Conversation

Once a conversation has settled on a genre, it stays there. You do not have to repeat yourself on every message, and a passing descriptive word will not knock the whole piece into another style halfway through a session.

To change it, name the new genre or subgenre directly: “make this a bossa nova instead” moves it. An artist name on its own does not: once a chat has a genre, “make the lead more like Adele” is taken as a note about the lead, not a switch to Pop. Until a chat has settled on a genre, an artist is enough to pick one, as above. Setting the Genre menu overrides everything, at any point. Starting a New Chat clears the memory along with the conversation.

State B: Editing Mode

When MIDI is already loaded, the panel switches to refinement controls:

Action (7 chips)

Enhance · Add layers · Extend · Simplify · Reharmonize · Humanize · Combine MIDI

Restyle (10 chips)

Jazzy · Darker · Brighter · Ballad feel · Swing · Sparse · Lush · Rhythmic · Classical · Groove / funk

Action and Restyle chips are multi-select: toggle several at once (for example, Reharmonize + Jazzy + Lush) to stack directives in a single pass. Aether flags musically contradictory combinations (such as Sparse + Lush) in real time so you can resolve them before generating.

Musical Parameters (Always Available)

ParameterRangeNotes
KeyAny key + 12 rootsAny key (AI decides) plus C, C#/Db, D, Eb, E, F, F#/Gb, G, Ab, A, Bb, B
ScaleLet AI Choose + 10Major, Minor, Dorian, Mixolydian, Lydian, Phrygian, Harmonic minor, Melodic minor, Blues, Pentatonic
Time Signature4/4 (default) + Let AI Choose + 54/4, 3/4, 6/8, 5/4, 7/8, 2/4. Defaults to 4/4 so Aether can send its bar-by-bar timing reference, which needs a known meter. Choose “Let AI Choose” if you would rather it picked.
Bars1 to 64Length of the generated clip
BPM20 to 999Tempo in beats per minute
Loop ModeOn / OffGenerates seamless loops suitable for layering
Lock to HostOn / OffSyncs BPM and time signature from your DAW (hidden in Standalone)

Importing fills these in

Drop a MIDI file onto the chat panel and Aether reads its key and tempo and sets Key, Scale and BPM for you, highlighting them so you can tell they came from the file. These controls are what hold a generation to a key and a tempo, so this is what keeps a variation on your own song in your own key. Change any of them and your choice wins. A file with no clear key leaves Key on Any key rather than pinning a guess.

Arrangement

Song Structure & Sections

Beyond single loops, Aether can compose with explicit song form. Turn on the Sections toggle in the parameter panel to define your piece as an ordered list of named sections, each with its own bar count, turning Aether from a loop generator into an arrangement tool.

Building a Structure

Sections you name yourself. The Bars field shows the running total of the form.
  • ●Add sections in order: Verse, Chorus, Drop, Bridge, or anything you type. Names are passed to the AI verbatim, so non-pop terms like "Exposition" or "Recapitulation" work too.
  • ●Give each section a bar count, or leave it at 0 to let the AI decide how to distribute length across the form.
  • ●When Sections are active, the Bars field shows the running total of your structure so the arrangement length stays honest.

Genre-Aware Presets

The same editor after choosing Pop, Jazz and Electronic. Each genre starts you somewhere different, and every row can be renamed, reordered, given a bar count or removed. These three have been trimmed to fit; the table below lists each preset in full.

Each genre supplies sensible structural starting points, so you don't have to build every arrangement from scratch:

GenreDefault Sections
Pop / Pop BalladIntro · Verse · Pre-Chorus · Chorus · Bridge · Outro
R&B / Neo-SoulIntro · Verse · Pre-Chorus · Chorus · Bridge · Vamp · Outro
Rock / Alt-RockIntro · Verse · Pre-Chorus · Chorus · Bridge · Solo · Outro
ElectronicIntro · Build · Drop · Breakdown · Build 2 · Drop 2 · Outro
Trap / Hip-HopIntro · Verse · Hook · Bridge · Outro
JazzHead · Solo · Trade · Out-head
Lo-Fi / ChillhopIntro · Loop A · Loop B · Bridge · Outro
The other eight genresIntro · Verse · Chorus · Bridge · Outro (generic fallback)