# M&E Tracks (Music and Effects)

Source: https://storiara.com/glossary/m-and-e-tracks
Last updated: 2026-09-14
Author: Nick Harty, Storiara

> M&E tracks, short for music and effects, are a version of a film's final mix with all dialogue removed but every other sound kept, including music, backgrounds, Foley, and effects. Distributors use them to dub the film into other languages, which is why sales agents and foreign buyers require a fully filled M&E as a delivery item.

## How the mixer builds one

At the final mix, the re-recording mixer works in stems: dialogue, music, and effects are kept on separate buses. The M&E is the music stem plus the effects stem, with the dialogue stem muted. That sounds simple, and it would be if production dialogue contained only dialogue.

Production sound picks up everything on set. Footsteps, a door, rustling clothes, a car passing outside the diner, and the cutlery on the table all ride along with the actor's lines. When the dialogue stem is muted, all of that disappears too. The effects editor and Foley team have to rebuild those sounds so the M&E plays as a complete soundtrack. That work is called filling the M&E, and it is budgeted and scheduled as its own task.

## A worked example from a delivery check

Say Scene 14 is a two-minute argument in INT. DINER - DAY. The mix team plays the M&E alone and logs the holes:

| Timecode | Missing sound | Fix |
|---|---|---|
| 01:12:04:10 | Maya's chair scrape as she stands | Foley |
| 01:12:31:02 | Coffee cup set down on counter | Foley |
| 01:12:48:15 | Laughter from background booth | Walla recorded at ADR session |
| 01:13:20:08 | Door chime as Joe exits | Effects library |

Background voices are the trap. Crowd walla in English can stay in some territories, but a line of intelligible English from an extra will be flagged. Many delivery schedules ask for group loop recorded separately so it can be placed in a separate stem or dropped.

## Mistakes and confusions

People mix up an M&E with a music-only or effects-only stem. Distributors usually want all three: the full mix, the dialogue, music, and effects stems separately, and the combined M&E. Check the list in your distribution agreement, since a foreign buyer's schedule can be stricter than a domestic streamer's.

Productions also leave M&E work until the end, after the mix budget has been spent. Filling a 95-minute feature can take days of extra Foley and editorial. Put it in the post budget from the start, alongside [ADR](https://storiara.com/glossary/adr) and [Foley](https://storiara.com/glossary/foley), and mention it at the [spotting session](https://storiara.com/glossary/spotting-session) so the sound team cuts effects with the M&E in mind.

## Where it shows up in paperwork

The M&E is a line in the [deliverables](https://storiara.com/glossary/deliverables) list your [sales agent](https://storiara.com/glossary/sales-agent) hands over, and it gets its own entry in the [QC report](https://storiara.com/glossary/qc-report). A [post-production supervisor](https://storiara.com/roles/post-production-supervisor) tracks it until the lab signs off, because an M&E rejection can hold back a buyer's payment under a [minimum guarantee](https://storiara.com/glossary/minimum-guarantee).

## Frequently asked questions

### What does fully filled M&E mean?

It means every sound that was recorded along with the dialogue has been replaced. If an actor sets down a coffee cup during a line, the production track carried that clink, so the M&E needs a Foley cup or the dubbed version plays with a silent table.

### Why do sales agents care about M&E tracks?

Foreign buyers dub or subtitle the film for their territory. Without a clean M&E they can't dub, and a buyer can reject delivery, which can hold up payment of a minimum guarantee.

### Is the M&E a stereo file or 5.1?

Usually it matches each final mix delivered, so a 5.1 mix gets a 5.1 M&E and a stereo mix gets a stereo M&E. The exact channel layout is set in the distributor's delivery schedule.