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Technical Notes

Tag Conversion

albums attempts to apply some of the same checks and rules with Vorbis comments (FLAC, Ogg Vorbis), ID3 tags (MP3) and MP4 iTunes atoms (M4A). To enable this, common tags like track number are converted to the typical Vorbis comment tag names. For example, the ID3 tags TPE1 "Artist" and TPE2 "Band" are referenced by the standard tag names "artist" and "albumartist". Or in other words, if albums writes a new "album artist" to your MP3, behind the scenes it's actually writing to the TPE2 tag.

Track total and disc total

If track number and track total are combined in the tracknumber (or ID3 TRCK) with a slash like "04/12" instead of being in separate tags, albums will see that as "tracknumber=04" and "tracktotal=12" and be able to write to the track number and track total field as if they were separate. The same rule applies for disc number and disc total if combined in the discnumber (or ID3 TPOS) tag. Storing track total and disc total this way is normal for ID3 tags.