The metadata tagging system used in OGG Vorbis and FLAC files, storing fields such as artist, title, BPM, and key as plain text.
Vorbis Comments is the metadata specification embedded in OGG Vorbis and FLAC audio files, storing information as simple UTF-8 key-value pairs (for example, TITLE=Song Name or BPM=128). It is the functional equivalent of ID3 tags for MP3 files, but uses a different, simpler technical structure with no strict limit on custom field names.
Why it matters
DJ software that reads FLAC files relies on Vorbis Comments to display track information and populate library columns such as BPM, key, and energy. If a field name does not match what the software expects, the data may be ignored even if it is present in the file.
In practice
When writing BPM or key data to FLAC files, check which exact field name your DJ software expects. The standard Vorbis Comment field for BPM is BPM. Some tools write custom fields like ENERGY that are software-specific and will not transfer automatically.
