Intelligent music workstation

Understand your track.
Work the section that matters.
Stay in control.

StemSense pulls your song apart, lets you talk about any section out loud, and generates ideas that actually fit your key, register, and feel — not generic MIDI, not AI slop.

midnight_demo.wavD minor96 BPM
Intro
Verse
Chorus
Bridge
Outro
vocals
bass
drums
guitar
source
piano
target
other
ready — describe what to generate
the chorus feels crowded — give me piano voicings that sit higher
checking how guitar & piano overlap…
The piano's sitting right on top of the guitar through that chorus. Here are three voicings up an octave.
Aharmony · register fit ✓

Reach up — voicing in the upper register

WAV · MIDI

How it works

01 · Understand

See your whole song at once

Upload a track and StemSense separates it into six stems — vocals, bass, drums, guitar, piano, and other — then maps key, tempo, sections, chords, and note events across every layer.

02 · Work the section

Talk about the exact part that matters

Draw a region on any stem and ask. The agent answers from measurements taken off your actual audio — onset counts, register, harmony, rhythm — never from generic music theory.

03 · Stay in control

Get options that fit — not output

Every idea is scored against your track’s key, register, rhythm, and harmony before you ever see it. Each option ships as playable audio, real notation, and a MIDI file for your DAW.

Every idea is checked against your track before you hear it

StemSense measures first, then generates — and only surfaces what survives.

Grounded

Deterministic measurements run before any model call. The agent states facts, not guesses.

Verified

A two-model firewall reads the numbers, then speaks — so claims about your track can’t be invented.

Filtered

Every generated option is scored and judged. You only hear the ones that fit.

Watch

A real session, start to finish

Upload, stem separation, a spoken question about a crowded chorus, and three generated voicings dropped straight into a DAW.

Watch the demo →
Coming Soon

Engineering

How it was built

The stem-separation pipeline, the real-time voice agent, and the constraint system that keeps generated ideas honest.

Read the case study →