What Files Should You Receive After Mixing and Mastering?

A finished song is more than one loud WAV file. The right delivery package should cover distribution, videos, performances, licensing, future remasters and secure archiving without surrounding you with confusing duplicates.

The exact files depend on the project, but every artist should understand what each version is for before approving the final delivery.

Start with the approved full mix

After mixing, you should receive the approved stereo mix at the original session sample rate and a professional bit depth, commonly 24-bit. This is the source for mastering.

The mix should include the complete start and ending, including natural reverb and delay tails. Its filename should identify the song, version and status clearly—for example:

`SongTitle_MixApproved_48k24.wav`

Avoid ambiguous names such as `final final 3.wav`. Version confusion can lead to the wrong file being mastered or distributed.

If the mixer supplied a loud reference for convenient listening, make sure it is clearly marked and not mistaken for the unmastered approved mix.

Core files after mastering

For most digital releases, request these essentials.

High-resolution master

This is the primary archive and distribution source, often a 24-bit WAV at the native project sample rate. Many distributors accept 44.1 or 48 kHz; some labels request higher rates. Follow the distributor's current specification rather than converting repeatedly.

Distribution-ready master

If your distributor requires a particular sample rate or bit depth, the mastering engineer can create that version using controlled sample-rate conversion and dither where required. Do not convert the high-resolution file with a random online tool.

Reference listening file

A high-quality MP3 or AAC is useful for email, private review and everyday listening. It is a convenience copy, not the source to upload when a lossless WAV is accepted.

Instrumental, clean and performance versions

Alternative versions are easier to create correctly during mixing than months later.

• Instrumental: the approved mix without lead and backing vocals. Useful for licensing, live performance and promotional edits.
• Clean version: replaces or mutes explicit words while keeping the musical timing intact. Radio, playlists or brand placements may request it.
• TV mix: usually removes the lead vocal but keeps backing vocals and ad-libs, although definitions vary. Confirm the recipient's requirement.
• A cappella: vocals without the instrumental, useful for remixes and performance preparation.
• Performance track: tailored for stage use, often with specific backing vocals or cues retained.

These are not automatically included in every package. Agree on them before the final export so there is no uncertainty about scope or cost.

Do you need mix stems?

Archived stems can protect future opportunities. A common set might include drums, bass, guitars, keyboards, lead vocals, backing vocals and effects. When all stems play together from the same start point, they should reproduce the approved mix as closely as the routing allows.

Stems are useful for:

• film, television and advertising placements;
• remixes and alternate edits;
• live playback systems;
• immersive or spatial remixes; and
• future remastering when the original session is unavailable.

They are not a replacement for the original multitrack session, and they require extra quality control. Bus compression, side-chain processing and shared effects can behave differently when groups are printed separately.

Masters for video and sync

Video editors often work at 48 kHz. If a campaign or music video is planned, request a 48 kHz master rather than letting the editing software make an uncontrolled conversion.

Sync supervisors may request full mix, instrumental, clean, a cappella and stems. Clear filenames and identical durations make those files much easier to align. Include the exact song title and version in the metadata or delivery sheet.

Do not add a spoken watermark to the final licensing package unless the recipient has specifically requested protected previews.

Vinyl and CD are separate deliverables

A streaming master is not automatically the correct production master for vinyl. Cutting engineers may request a version with different level, peak control, low-frequency treatment or side duration. Ask the chosen plant or cutting engineer for its specification before ordering a special version.

For CD, a sequenced production master may need track markers, CD-Text and appropriate spacing. A folder of individual WAV files is not always the full replication master.

What about Dolby Atmos delivery?

An immersive release normally needs more than a stereo WAV. The Atmos master can be delivered as an ADM BWF file containing beds, objects and metadata, while the standard stereo master remains part of the release package.

The stereo mix should be the approved stereo production, not simply a binaural headphone render of the Atmos mix. Read our guide to Dolby Atmos, ADM BWF and binaural audio for a clear explanation.

Metadata and documentation

Audio files should be accompanied by accurate information. Keep a delivery sheet containing:

• artist and song title;
• mix and master version dates;
• sample rate and bit depth;
• explicit or clean status;
• International Standard Recording Code when assigned;
• songwriter, producer and engineer credits;
• featured artist spelling; and
• any fade, gap or sequencing notes.

Do not invent an ISRC during mastering if your label or distributor will assign it. Confirm who owns each part of the release process.

How to archive the project

Keep at least two verified copies in different places, with one copy off-site or in dependable cloud storage. Preserve:

• the approved mix and all final masters;
• requested alternate versions and stems;
• the original multitracks or a consolidated archive;
• project notes, lyrics and credits;
• artwork masters and release identifiers; and
• a text file explaining the folder structure.

Open a few files from the archive after copying them. A backup is not proven until it can be read.

Frequently asked questions

Should I upload a WAV or MP3 to my distributor?

Upload the lossless WAV that meets the distributor's specification. MP3 is appropriate for convenient listening previews, not as the main source when lossless delivery is available.

Do I need both 16-bit and 24-bit masters?

Keep a 24-bit high-resolution master. Request 16-bit only for a destination that requires it, such as some CD workflows. Avoid making conversions without a delivery reason.

Are stems included with mixing?

Policies differ. Stem creation and quality control take time, so confirm the required groups before booking or before final delivery.

Can I rename the files later?

Yes, but preserve an unmodified archive and use a consistent naming system. Never rename files in a way that hides which version was approved.

Build a delivery package for the way you release

Our mixing and mastering services provide organised, release-focused workflows rather than a mystery export. Review the available packages or contact Mix & Master Engineers with your distributor, format and alternate-version requirements before the session starts.