MIDI, audio, or stems? Choose the handoff your collaborator can actually use

Start with the next decision

A handoff is not a badge for being ‘open’ or ‘finished.’ It is a way of preserving the decision the next person needs to make. Send MIDI when they need to change notes, voicings, rhythm, orchestration, or the instrument itself. Send a consolidated audio part when the timing and sound are the point. Send stems when they need to balance, process, or arrange fixed audio without rebuilding your full session. MIDI is performance instructions, not the sound that your plug-in produced; a rendered part is the opposite: its sound travels, but its internal note choices do not.

Ask one plain question before exporting: “What change am I inviting?” A songwriter who wants a pianist to try a different inversion needs a MIDI clip plus tempo, key, and a reference bounce. A mix engineer needs printed files that all begin at the same timeline point, even when a guitar enters later. A co-producer who may replace a soft synth needs both: a MIDI safety copy and an audio print labelled with the actual patch and plug-in version. That small duplication is cheaper than rediscovering a sound under deadline.

Build a three-layer package

Use a folder named like Sparrow_92bpm_Emin_2026-09-19. Put a reference mix at the top, then MIDI, PRINTS, and NOTES. In the notes file, name the tempo map, key centre, sample rate, bar-one start point, and any intentional pickup. MIDI files need a companion note for sound choices because the standard carries musical messages, not every manufacturer-specific preset, audio effect, sample license, or automation choice. The MIDI Association’s specifications explain why compatible instruments can exchange messages; compatibility should not be mistaken for identical playback.

For prints, consolidate from bar 1 to the same end marker and include the tail. Name files by role rather than mysterious track numbers: 01_Kick.wav, 02_BassDI.wav, 03_BassAmp.wav, 10_LeadVox_comp.wav. If a part has an important sidechain or creative effect, make a dry print and a ‘as heard’ print. The dry file preserves options; the effect print tells the next person what you meant.

Do not export ambiguity

A one-bar MIDI chord loop can sound radically different through another synth, so include a two-bar audio reference beside it. Conversely, a stem that starts at its first note cannot reliably line up after a tempo-map change; it forces the recipient to guess the offset. Put silence before the entrance instead. Check that every file begins at exactly the same musical location, that renders include delay and reverb decay, and that the reference bounce matches the last approved arrangement.

When the recipient does not own your instruments, freeze or render the dependent tracks. Ableton documents that collecting a project copies used media but cannot copy plug-ins; that is a useful reminder that a project folder is not a portable instrument locker. If the source session itself matters, share the versioned session separately from the interchange package, never as its substitute.

Exercise: one chorus, three handoffs

Take an eight-bar chorus and prepare three folders: one for a keyboard player, one for a mix engineer, and one for a co-producer. The keyboard folder gets tempo/key notes, MIDI, and a reference. The mix folder gets aligned stems, a reference, and a note identifying printed bus processing. The co-producer folder gets those elements plus dry/effected pairs and a plug-in list. Open each folder tomorrow and write the first question you can answer immediately. If the answer is not obvious, rename or add one note. The payoff is a handoff that protects musical intent while giving the next maker a real, chosen degree of freedom.