Musical Attributes
Use Musical Attributes for supported track metadata, including key, BPM, genre, mood, artist, album, ISWC, ISRC, territory, and duration.
Edit attributes
Section titled “Edit attributes”For one owned track, choose Edit attributes, update the available fields, and save or cancel. A save updates the visible track data immediately, then synchronises it; a failed sync restores the previous values rather than leaving an uncertain change. Shared tracks are read-only in this widget.
For several selected tracks, review the key and BPM summary. The multi-track view does not present a bulk metadata editor; it focuses on identifying values and running eligible analysis.
Analyze a local audio file
Section titled “Analyze a local audio file”In the desktop app, a readable local audio file can be analyzed with Essentia.js to calculate BPM and musical key. This local helper accepts WAV, MP3, FLAC, AIFF, M4A, and OGG files, does not require network access, and returns a numeric BPM plus a formatted key such as C major or A minor.
- Select the track with the readable local audio file.
- Use the available analysis action in Musical Attributes.
- Review the BPM and key result before saving or using it in another workflow.
If the file is missing, unsupported, cannot be decoded, or cannot be analyzed, The Library leaves the existing BPM/key values unchanged. A completed analysis with no usable BPM or key returns the action to its ready state without inventing a result.
Analyze several tracks
Section titled “Analyze several tracks”With several selected tracks, the widget offers analysis for the eligible, non-shared tracks. It shows progress and reports whether every analysis completed or only a subset succeeded. Shared tracks are excluded from the operation.