Track Info | Mundi Metallum

Track Info shows you two essential numbers about your mix: how loud it feels (LUFS) and how fast it goes (BPM). Knowing these before you start mastering helps you make smarter decisions about your settings.

What you'll need

A track loaded in Mundi Mastering app. That's all you need. Everything else happens inside the Track Info window (modal).

Important: All analysis happens locally in your browser. Your audio never leaves your device.

1. Open Track Info

First, load your track into Mundi Mastering app. Once it's loaded, click the Track Info button in the Player section (or press I) to open the window (modal).

When the window (modal) opens, the values show as dots. Click Analyze Original Track to run the detection - within a few seconds LUFS and BPM appear and the status changes from Analyzing... to Analysis complete.

Pro tip: Run Track Info before picking a preset. Knowing your starting LUFS tells you how much (or how little) mastering your mix actually needs - a mix at -16 LUFS needs more push than one already at -10.

Track Info modal showing LUFS and BPM — While analyzing - values still appear as dots.

Track Info button in player controls — Analysis complete - LUFS and BPM ready.

2. Track Gain (LUFS)

Track Gain shows your mix's Integrated Loudness in LUFS - how loud the whole track feels on average. It's the same scale streaming platforms use to normalize playback.

Typical reference points: a raw mix often sits around -16 to -20 LUFS, a streaming-ready master around -14 LUFS and a loud commercial pop or metal master around -8 to -10 LUFS.

Fact! When you load a track, Mundi Mastering app reads its LUFS automatically and snaps the Loudness slider in the Controls section to that exact value. So if your raw mix sits at -12.5 LUFS, the slider starts there. Your reference point is always honest, no guessing.

Tip: If your raw mix is already at -10 LUFS, you don't need aggressive mastering - push it gently. Streaming platforms (Spotify, Apple Music, YouTube and most others) automatically normalize loud tracks down to their target level, so going louder rarely helps once your track is online.

3. BPM (Tempo Detection)

BPM tells you the track's tempo in beats per minute. Mundi Mastering app detects it from the audio when you run the analysis.

Useful for matching tracks in a setlist or playlist, applying tempo-synced effects or just confirming the tempo of a song you imported without metadata.

What's BPM? BPM stands for beats per minute - simply how fast a song goes. A slow ballad sits around 60-80 BPM, most pop and rock songs land between 100-130, and faster genres like drum & bass or fast metal often hit 160-180 or more. It's the heartbeat of the track.

4. Re-analyze the track

Loaded a new version of the track? Open Track Info again and click Analyze Original Track to re-run the detection on the current audio.

Each run takes only a few seconds and the status field tells you when it's done.

Note: Track Info always reads the original track, not your mastered version.

Two numbers, dozens of better decisions. Track Info is small, but it's the foundation of every smart master.