What is Melody ML?

Melody ML is a web-based audio separation tool that uses machine learning to split a song into individual stems. You upload a track, and it automatically isolates vocals, drums, bass, and other instruments so you can download the separated parts for remixing, practice, or production. It's based on the Demucs model and runs entirely in the browser, with no software to install.

What Melody ML does

The core function is source separation: taking a mixed song and pulling it apart into distinct tracks. According to the site, it isolates:

• Vocals
• Drums
• Bass
• Other (remaining instruments)

The output is a set of stems you can download and reuse. The stated purpose is to "isolate vocals and generate stems to remix songs with," so the main use cases are remixing, karaoke or instrumental extraction, and sampling individual parts of a track.

How it works

1. You upload a song file.
2. The service processes it using the Demucs model.
3. You wait while it runs — the site notes processing "can take 1–20 minutes."
4. You can refresh the page and return later to download your stems.

Processing happens server-side, so your own machine's specs don't matter. You just need a browser and an account.

Supported files and limits

If a song shows an error, the site attributes it to either exceeding the length limit or using an unsupported format — those are the two conditions to check first.

Cost

The site states you get 2 free songs, after which each song costs $0.50. Credits are purchased in bundles:

Payment is handled through Visa/Debit Card, Stripe, and PayPal. Credits are described as going toward development and server costs.

Accounts, privacy, and ownership

• You create an account (email, or sign in with Google) to upload and manage songs.
• Melody ML stores your email address for basic functionality; Stripe and PayPal handle payment details.
• The site states it does not own, share, or take authorship of uploaded songs, and does not share your email or send spam.
• You take copyright and legal responsibility for what you upload.

When Melody ML fits

It's a reasonable choice if you want quick stem separation without installing anything, your tracks are under 10 minutes and 100 MB, and you're fine with a per-song credit model after the free allowance. If you need to process long files, huge libraries, or want offline/self-hosted separation, the length and size caps here will get in the way — those are the main conditions to weigh before committing credits.

For questions or support, the site points to its FAQ and contact page.