🧾 What is bulk upload?
It's a feature that allows you to upload your entire music catalog (albums, EPs, and singles) using a single CSV file, which optimizes time and reduces errors when distributing large volumes of content.
📋 What do you need?
CSV file with the official format provided by UMW.
Direct links (URL) for the audio files (one per track).
Direct link to the cover for each release.
All files must be accessible from the specified URL.
📁 File structure
The CSV file is divided into two sections:
Release Level – Album, EP, or single information.
Track Level – Specific details for each song.
Each row represents a track, so if your release has 10 songs, you'll need to fill out 10 rows with the data for the repeated release and the data for each song individually.
🔧 Required fields
Release title
Main genre
Language
Year of copyright and publication
Participants with defined roles (e.g.
primary:Nombre;composer:Nombre)ISRC code or
"auto"if you want the system to generate it automaticallyLink to cover (square format, minimum 3000x3000 px)
Link to the audio file per track (WAV/FLAC format preferred)
📌 Release types based on the number of tracks
Guy | Number of Tracks |
Single | 1–3 |
EP | 4–6 |
Album | 7 or more |
The type is automatically assigned based on the number of tracks per release.
💡 Key rules
The file must be in .csv format , encoded in UTF-8 .
Don't delete columns even if you don't use certain fields.
Participants must be listed with their respective roles.
Example:primary:Juan Pérez;composer:Ana RuizEach track must have at least one lead artist and one composer.
File links must be downloadable without external authentication .
Examples: public Dropbox links, Google Drive (forcing download), Amazon S3, etc.
🚫 Fields not supported by bulk upload
Song lyrics
Custom notes or descriptions
Track start time
These fields can then be manually edited from the UMW interface.
🔄 In case of errors
If any release contains errors in the CSV, that content will not be uploaded, but valid releases will still be processed. The system will generate a report detailing the errors so you can correct them and re-upload the file.
🌍 Territory support
You can define specific countries for your rights using ISO codes (e.g. EC;CO;MX) or use "WD"to indicate worldwide distribution.
✅ Benefits of using Bulk Loading with UMW
You speed up the process of loading large catalogs.
You reduce manual errors.
Manage multiple releases from a single sheet.
Save time creating and registering works.