Defined in carb/audio/IAudioData.h

constexpr char carb::audio::kMetaDataTagAlbum[] = "Album"

These are the metadata tags that can be written to RIFF (.wav) files and also have specified usage under the Vorbis Comment metadata format standard (used by .ogg and .flac).

Vorbis Comment supports any metadata tag name, but these ones should be preferred as they have a standardized usage. Standard Vorbis metadata tag.