Chordal accompaniment
Piano stems
Create piano accompaniment around your own chord progression. Piano can establish the harmony, support a melody, or bring a familiar comping feel to the space between other parts.
Start with a style and one broad feel, such as warm, relaxed jazz. Compare takes for their rhythm and spacing, then ask for more space if the accompaniment feels too busy.
Strummed and picked accompaniment
Guitar stems
Add guitar accompaniment to carry the chords and give a section its rhythmic feel. Choose it for a strummed part or a picked pattern around the rest of your arrangement.
Describe the style and feel first. Name a technique, such as fingerpicking, when it is central to the idea. After comparing takes, refine the part that best fits your track.
Low end and groove
808 & bass stems
Build a harmonic foundation with an acoustic, electric, 808, or synth bass part. A bass line connects the chord progression to the groove and gives the arrangement a sense of weight.
Name the bass family in your prompt so the writing and sound can match: upright for an acoustic jazz feel, for example, or 808 for an electronic part. Audition the take alongside your drums and chords.
Rhythm and energy
Drum stems
Create a drum groove with the style and energy your section needs. Drums establish the pulse and help you judge how the bass and other rhythmic parts fit together.
Set your tempo and time signature, then describe a groove family and feel, such as relaxed jazz with a light swing. Drums do not use key or chords. Compare takes or ask for a different energy level.
Rhythmic chord accents
Chord & stab stems
Use short chord hits and compact riffs to punctuate a groove. Chords and stabs give the harmony a rhythmic role, with room between the hits for bass, drums, and a lead.
Try a broad direction such as punchy electronic music with a spacious groove. Once you choose a take, ask for more space between hits or a simpler rhythm while keeping your chords.
Sustained harmony
Pad stems
Place sustained harmony and atmosphere behind a melody or rhythmic part. A pad can give an open arrangement a continuous harmonic background without adding another busy pattern.
Describe the overall texture and feel, such as calm, atmospheric cinematic music. Compare the takes against your existing parts, then try a darker texture or shape the pad’s level in your DAW.
Repeating motion
Arpeggiator stems
Add a repeating pattern that brings movement to your chords. An arpeggiator can sit behind a lead, connect a sparse arrangement, or provide a rhythmic layer alongside a sustained pad.
Begin with the musical feel, such as light, flowing electronic music. After hearing the takes, try a slower pulse or ask for a less busy part. Export MIDI to explore the pattern with your own synth sound.
Songs, solos and jingles
Melody stems
Develop a melodic idea for one of three writing jobs: a singable Song, an instrumental Solo, or a compact Jingle. Choose the job that matches the part you want to add.
Say which kind of melody you need, then describe its style and feel. Compare phrase shapes and refine a selected take’s range or density to make room for the accompaniment.
With English lyrics, the rendered audio is an instrumental guide; the MIDI carries the timed lyric information.
A recurring foreground idea
Hook & lead stems
Create a short foreground riff or lead phrase that can return through the arrangement. Choose Hook/Lead when you want a recurring idea to give a section its focus.
Start with the style and feel, such as bright, uplifting electronic music. Compare how each take sits over your chords, then try a different rhythm if the hook needs another shape.
Transitions and accents
FX stems
Mark a transition, arrival, or brief accent with a generated FX part. Choose a tonal rise, a noise or atmosphere swell, an impact, a sub drop, or an echo throw.
Pick one job first and add another layer after hearing it if needed. Keep the request focused on the gesture, then compare its timing and length with the section it introduces or closes.
Use the WAV when the exact auditioned FX sound matters. MIDI playback depends on the instrument and effects you choose in your DAW.
From a part to your arrangement
Use your stems in a DAW.
Set your tempo and time signature, and add your own key and chord progression for pitched parts. Describe the style and feel, choose the stems you need, and compare takes. Each stem is generated independently, so audition the parts together before choosing your combination.
Export MIDI to edit the notes or try your own instruments. Export WAV to keep the rendered sound you auditioned. Place the parts alongside your existing tracks and shape their timing, balance, and effects in your DAW.