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Songmastr
What it is
Songmastr is a web service that automatically masters a song against a reference track supplied by the user. Its algorithm matches the reference’s RMS, peak amplitude, and stereo width, and the service is built on the open-source Matchering library with artificial intelligence. Songs and references can be uploaded as WAV or MP3 files, then the mastered result is downloaded from a page after processing. Files may be no longer than 10 minutes or larger than 80 MB, and uploads are deleted at most 24 hours later. No installation or registration is required. The maker recommends choosing a reference with a similar genre and vibe. The Free plan includes seven song masterings per week. One-time packs start at $4 for three masters of one song, while larger packs reach $60 for 300 masters across 30 songs. Paid packs include uncompressed WAV files and custom and catalog references; the Studio Pack also includes mixing advice for one song. Terms limit use to personal and noncommercial purposes.
For and against
For
- No installation or registration required
- Accepts WAV and MP3 uploads
- Reference matching guides the mastering result
- Free plan includes seven weekly masterings
- Paid packs provide uncompressed WAV files
Against
- Files are limited to 10 minutes and 80 MB
- Terms allow personal and noncommercial use
- No stem mastering is listed
- Automated access requires explicit permission
The verdict
Songmastr offers focused reference-based mastering without software installation. Its free allowance and one-time packs are useful, but commercial projects and automated workflows face stated restrictions.
Who it suits
Musicians and producers wanting a browser-based mastering workflow guided by a reference track. It suits users who can work within personal, noncommercial terms and file limits.
Plans and prices
Free
7 song masterings per week
Read 8 Oct 2026 · songmastr.com
Single Pack
3 masters · 1 song · 3 different masters per song · custom and catalog references
Read 8 Oct 2026 · songmastr.com
EP Pack
9 masters · 3 songs · 3 different masters per song · custom and catalog references
Read 8 Oct 2026 · songmastr.com
Album Pack
50 masters · 10 songs · 5 different masters per song · custom and catalog references
Read 8 Oct 2026 · songmastr.com
Studio Pack
300 masters · 30 songs · 10 different masters per song · custom and catalog references
Read 8 Oct 2026 · songmastr.com
On the record
- Age eligibility
- The terms require users to be at least 18, or the age of majority in their jurisdiction if higher.songmastr.com · read 8 Oct 2026
- Audio matching
- The algorithm matches the reference song's RMS, FR, peak amplitude, and stereo width.songmastr.com · read 8 Oct 2026
- Automated access
- The terms say automated use, including bots and scripts, is not authorized unless the website owner explicitly permits it.songmastr.com · read 8 Oct 2026
- Commercial use
- The terms grant use for personal and noncommercial purposes.songmastr.com · read 8 Oct 2026
- File limits
- A song can be at most 10 minutes long and 80 MB.songmastr.com · read 8 Oct 2026
- File retention
- The upload page says files are deleted at most 24 hours after upload.songmastr.com · read 8 Oct 2026
- Input formats
- Users can upload songs and reference tracks in WAV or MP3 format.songmastr.com · read 8 Oct 2026
- Output
- After processing, users can download the mastered file from a download page.songmastr.com · read 8 Oct 2026
- Purpose
- Songmastr automatically masters a song to a reference track uploaded by the user.songmastr.com · read 8 Oct 2026
- Reference choice
- The maker recommends choosing a reference track in the same genre and vibe as the song being mastered.songmastr.com · read 8 Oct 2026
- Requirements
- The service requires no software installation or registration.songmastr.com · read 8 Oct 2026
- Submission rights
- The terms say users retain copyright to their submissions while granting the service a perpetual, royalty-free, sublicensable license to use them.songmastr.com · read 8 Oct 2026
- Technology
- The service uses artificial intelligence and is based on the open-source Matchering library.songmastr.com · read 8 Oct 2026
