How to prepare files for a mixing engineer in Canada
Build a clear mix handoff: agree on files, preserve intentional sounds, test the export and give your engineer useful notes. Includes a bilingual delivery checklist.
Last reviewed 2026-10-28 · quarterly review cadence
Prepare a mix handoff around your engineer’s written requirements: the agreed audio files, a current rough mix, clear names and a short brief. Check timing and playback before uploading. Identify intentional effects and unfinished editing, then confirm the delivery version, requested outputs and who will approve the mix.
Key takeaways
- Agree on the file package before exporting the whole project.
- Separate creative decisions to preserve from technical decisions the mixer can change.
- Give the delivery one dated version and one person responsible for feedback.

What should you confirm with a mixing engineer first?
Start with the person receiving your material. MusicList’s first page of producer and engineer results showed 24 entries on October 28, 2026: 17 artists with production credits and seven producer or engineer profiles. This is a snapshot of that page, not a count of available mixers or a quality ranking. Check the specific role, listen to relevant released work and ask whether the person accepts your project before preparing a large upload.
Send a small project summary through the provider’s published contact route. Describe the song count, recording stage, target dates and the work still needed. Ask for the engineer’s current preparation instructions and accepted delivery method. The sources below illustrate different professional preferences; none creates a single Canadian export standard. Use the recipient’s instructions to settle differences before you bounce files.
Should you send individual tracks, stems or the session?
Name the requested package explicitly. An individual audio track preserves a separate recorded element; a stem combines several elements into a grouped audio file. A native session is a different delivery that can depend on software and plug-ins. Jonas Kroon’s guide distinguishes individual tracks from grouped stems and generally prefers exported audio to a Pro Tools session. That is his workflow, so confirm your own engineer’s preference rather than treating one format as universally correct.
Ask which decisions remain open. Combining all backing vocals into one file commits their internal blend, whereas separate files preserve more control. Neither choice is automatically better. Agree on any grouping, alternate takes and stereo elements with the mixer, then give those choices a written home in your delivery note. Keep your original production project intact while you prepare a separate delivery copy.
Choose the package together
Scroll horizontally to read the table.
| Package | What it preserves | Question to settle |
|---|---|---|
| Individual tracks | Separate elements for the mixer to balance. | Which takes and layers are final? |
| Grouped stems | An intentional blend of several elements. | Which internal balances are already approved? |
| Native session | A project in its original application. | Will the recipient accept this version and its dependencies? |
How should the audio files be exported?
Ask the engineer to confirm format, sample rate, bit depth and the common start point. Studio Moe’s checklist requests WAV or AIFF, at least 24-bit resolution and the source sample rate without upsampling. Abbey Road asks for files bounced from a shared starting point, with matching lengths and sample rates. These are attributed examples, not a demand to convert every project to one arbitrary setting.
Turn the agreed settings into a repeatable export pass. Write them beside the song title so another band member can check the delivery without guessing. Preserve the silence before a late entrance when it is needed for alignment. If your original material falls outside the requested specification, disclose that before conversion; changing a file label or choosing a higher export number does not establish that the source was recorded that way.
Check the delivery copy
- Export the agreed final takes using the recipient’s settings.
- Import the exported files into a clean session at the agreed starting point.
- Listen through and compare the arrangement with your rough mix; note any discrepancy before uploading.
Which effects should stay in the files?
Do not strip every effect simply because a generic checklist says to send dry tracks. Abbey Road asks for dry multitracks but makes provision for effects that are integral to the production. Jonas Kroon often wants processing and automation printed. The difference is a reason to have the conversation: distinguish a sound you are committed to from a temporary mix treatment you want the engineer to reconsider.
Identify essential sounds by track name in the notes. Describe the result to preserve, such as a rhythmic delay that functions as part of the arrangement, rather than sending an unexplained list of plug-ins. Studio Moe suggests a clearly named second version without an uncertain effect. Ask whether the mixer wants that option; label processed and unprocessed files so they cannot be mistaken for two parts intended to play together.
What should go in the delivery note?
Keep the note short enough to use while listening. Include the artist and song names, tempo information, delivery version, current rough mix and the most important creative priorities. Studio Moe recommends a rough mix, reference tracks and written requests. Explain the particular feature of each reference that matters; a reference is a conversation about direction, not a promise to reproduce someone else’s recording.
Use one named person to collect the artist’s feedback. Mark what is final, what is open to interpretation and what needs an answer before work begins. The example below is a suggested handoff note, not a provider’s form or a claim that these outputs are included. Replace every placeholder with agreed information and ask the mixer to confirm anything unresolved.
How do you keep the upload and revisions organized?
Before sharing, check that the folder contains the intended version of every song and that names describe the musical roles. Open the sharing link using a separate browser session to test access, without exposing private work publicly. Tell the recipient which folder is the delivery and keep an unchanged copy yourself. If a file must be replaced, send a dated change note rather than silently swapping audio under an existing name.
Agree on how revisions will be collected and what counts as a change of scope. Abbey Road’s published package describes one revision for adjustments to balance and effects; that is its service term, not a Canadian industry entitlement. Ask your engineer how replacement takes, additional versions or further rounds are handled. Keep feedback tied to the exact mix filename so comments on an earlier mix do not overwrite decisions already settled on a later one.
Frequently asked questions
Can I send an MP3 as my rough mix?
Ask which reference format the engineer accepts. A rough mix is a listening reference, while the audio used for the actual mix follows a separate delivery specification. Keep the reference clearly labeled so it cannot be confused with an individual production track or the final approved master.
Do I need the same recording software as the mixer?
Not necessarily when the agreed handoff consists of exported audio, as illustrated by the preparation guides. Native sessions are another arrangement and should be confirmed explicitly. Ask what the recipient can open, then test your exported delivery instead of assuming that sending a project file includes every required sound and dependency.
What if I discover a wrong take after uploading?
Contact the engineer before replacing the file. Identify the song, original filename, corrected filename and reason for the change. Ask whether work has started and whether the replacement changes the agreed scope or timing. Keep both the original delivery record and the correction note so everyone knows which version is current.
Should I include alternate mixes in my request?
List the versions you may need before the engineer confirms the job, such as an instrumental or a version for performance. Ask which are included and when they should be approved. A request does not establish availability, price or inclusion; the written scope should settle those points before final delivery.