Making Your Tracks Release-Ready with Tonn API: Mix Analysis from RoEx

3 min readMar 17, 2025

As an independent music producer, ensuring your music sounds professional and polished before release can be challenging. Whether you’re mastering your own tracks or fine-tuning a final mix, having clear, actionable feedback can make all the difference. That’s where Tonn’s Mix Check Studio API steps in.

In this post, I’ll walk you through using the Tonn API to diagnose your mixed or mastered tracks, highlighting potential improvements that will get your music streaming-platform ready. The code examples referenced are available here on GitHub.

What is Mix Check Studio?

Mix Check Studio is a powerful web app designed by RoEx to provide detailed analysis of your audio tracks. It identifies crucial mix and mastering issues, including:

Clipping: Detects unwanted distortion or peaks that may degrade audio quality.
Dynamic Range: Evaluates compression levels to ensure appropriate dynamics.
Loudness: Analyses how your track’s loudness compares to standards set by Spotify, Apple Music, and YouTube.
Stereo Field & Mono Compatibility: Assesses stereo imaging, ensuring your music sounds great on all devices.
Tonal Balance: Offers insights to enhance warmth, clarity, and overall sonic presence.

This is available here: https://mixcheck.studio. We have now made this same analysis publicly available in our Tonn API, meaning you can integrate our Mix Check insights into your own platform or service.

Why Should You Analyse Your Tracks?

Releasing music that meets industry standards improves listener experience and increases your chances of playlist inclusion. Mix Check Studio and now the Tonn API helps you:

Identify issues early, avoiding negative listener feedback.
Understand exactly what needs to be tweaked, saving time during revisions.
Prepare your music to sound optimal across all streaming platforms.

Step-by-Step Guide

1. Set Up Your Environment

First, ensure you have:

An API key from the Tonn API Portal.
Your audio file uploaded to a publicly accessible URL.
Python with the requests library installed (pip install requests).

2. Create Your Analysis Request

Prepare a simple JSON payload like this example:

{
    "mixDiagnosisData": {
        "audioFileLocation": "https://your-audio-file-location/audiofile.wav",
        "musicalStyle": "ROCK",
        "isMaster": true
    }
}

Adjust the audioFileLocation with your track's URL and select your track's musicalStyle.

3. Run the Analysis

With your payload prepared, run the provided Python script (roex_mix_analysis.py):

python roex_mix_analysis.py

4. Example API Output and Interpretation

Here’s an example of the detailed feedback you’ll receive from Mix Check Studio:

=== Mix Analysis Results ===

- Bit Depth: 24
- Clipping: MINOR (Recommendation: use a limiter to control rogue peaks and prevent distortion.)
- Dynamic Range: LESS (Advice: Avoid excessive compression to maintain flexibility during mastering.)
- Integrated Loudness: -8.88 LUFS (Note: Track will be reduced by ~5.1 dB on Spotify, YouTube, Tidal, and ~7.1 dB on Apple Music to match platform loudness standards.)
- Mono Compatible: True
- Stereo Field: STEREO_UPMIX (Consider stereo imaging adjustments.)
- Peak Loudness: +1.3 dBFS (Advice: Lower overall levels to avoid peak issues.)

--- Tonal Profile Recommendations ---
- Boost low-mid frequencies for warmth and body.
- Add subtle boosts in high-mid and high frequencies for clarity and presence.
- Use multiband compression to tame the bass and balance the tonal profile.

Remember: These recommendations should guide your revisions. Always critically evaluate your adjustments by ear.

5. Implementing Improvements

Take these insights back to your DAW and:

Address minor clipping by placing a limiter on your master channel.
Reduce excessive compression to restore dynamic range.
Adjust EQ and multiband compression to refine tonal balance.

6. Verify Your Progress

After adjustments, run another Mix Check Studio analysis to compare the results. Repeat this process until your track meets professional standards, ensuring it’s ready for streaming platforms like Spotify, Apple Music, and beyond.

Getting Started

The Tonn API portal is built for easy self-service, allowing you to quickly set up and begin analysing tracks immediately:

Need Help?

Our support team is ready to assist — visit the Tonn API Portal for more details or to reach out directly.

Make your next release your best yet with the Tonn API!