Hi.
I'd like to have some information about classical music (and opera) CDs so that I can enter the metadata correctly. For example, The four seasons by Antonio Vivaldi.
Artist: Vivaldi or the conductor (or other)?
album artist?
year: the date the work was written, or the date the CD was released?
If files are arranged in folders, by artist with sub-folders by album, should the artist name be that of the artist, the composer or conductor (or other)?
Thanks.
The forum search function with the search term "tag classical music" shows a number of thread around this topic.
Please read these first.
I did find a lot of informations. There were a few points that weren't clear (like the distinction between artist and album artist) but I finally understood.
However, still concerning classical music, in which field should I enter the date of composition of the work?
There is AFAIK no specific field for the composition date.
On this website, you can find some suggestions but they also don't have a specific field for it. **
If this date is important for you, you can create your own like COMPOSITION_DATE.
Please note: It's highly unlikely that any playing software out there will show you this date.
** Just for the record:
Of course you can enter a DISCNUMBER, unlike stated in "Axiom 11".
I had seen the originalyear field in the list but I guess it's a reserved data for a first edition of a disc or something like that.
So it might work with an original field. And it doesn't matter if audio players don't see it, it's just informative and visible in MP3Tags or Puddletag.
Thanks...
You mean ORIGYEAR?
The ID3 standard describes the underlying TORY in ID3v2.3 as:
Remember this is your personal library. The standard fields and their intended purpose are a good guideline but you are free to use these or any custom fields as you wish.
Just keep in mind whatever player you choose may be limited in which fields you may be able to see or to help browse.
I have that as additional tags:
originalalbum
originalartist
originaldate
originalreleasetime
originalyear
First issue?
It's up to you if you want to use these fields.
As @MotleyG correctly says: It's YOUR library. 
As long as
nothing speaks against the use of your mentioned original-* fields.
This is the result of a series of tags that I believe to be very complete.
Note that on the link you gave, they state that for music of this kind, the name of the artist and composer must be the same. They use the performer tag to define the main musician or the orchestra that played (which is much better suited to album artist).
If you are looking for more details like:
Again: It depends on the playing and displaying software what kind of information should be saved in which field if you want to like to see and use them.
Most player will read (and can sort by) ALBUMARTIST, but not PERFORMER.
Most player will read (and can sort by) ARTIST, but not by COMPOSER.
But if
you can fill whatever fields fits best for you.
Just for info, list of tags and custom tags of Puddletag:
accurateripcount
accurateripcountalloffsets
accurateripcrc
accurateripdiscid
accurateripid
accurateripresult
accurateriptotal
album
album artist
albumartist
albumartistsort
albumsortorder
allmusicurl
arranger
artist
artistsort
asin
audiodelay
audiolength
audiosize
author
band
barcode
bpm
catalog
catalog number
catalogid
catalognumber
cdtoc
codinghistory
comment
comments
compilation
composer
compositiondate
conductor
contentgroup
copyright
country
credits
ctdbdiscconfidence
ctdbtrackconfidence
date
description
disc
discid
discnumber
discogs_release_id
disctotal
dynamicrangelevel
encodedby
encoder
encodersettings
encodingsettings
encodingtime
engineer
ensemble
explicit
filename
fileowner
filetype
genre
gracenoteextdata
gracenotefileid
grouping
hdtracks
imfo
info
initialkey
involvedpeople
isrc
label
labelno
language
length
location
log
lyric
lyricist
lyrics
lyricsurl
mbrainz_album_id
mbrainz_artist_id
mbrainz_track_id
media
mediatype
mood
musicbrainz_albumartistid
musicbrainz_discid
musiciancredits
notes
organization
origalbum
origartist
originalalbum
originalartist
originaldate
originalreleasetime
originalyear
origyear
peaklevel
performer
performersortorder
playcount
pmedia
popularimeter
producednotice
producer
provider
publisher
radioowner
radiostationname
rating
recordingdate
releasecountry
releasedate
releasestatus
releasetime
releasetype
remastered
remixedby
replaygain_album_gain
replaygain_album_peak
replaygain_reference_loudness
replaygain_track_gain
replaygain_track_peak
retaildate
ripdate
rippingtool
rmslevel
setsubtitle
software
source
sourcealbum
sourcealbumurl
sourceid
sourcemedia
style
supplier
taggingtime
tempo
time
title
titlesortorder
toolname
toolversion
totaldiscs
totaltracks
track
tracknumber
tracktotal
ufid
upc
uploader
url
version
website
work
writer
year
And which one of your above Puddletag list will be displayed in Alt +T of Mp3tag?
Can you show us a screenshot from the Mp3tag "Extended Tag window" for a track filled with all of the about fields?
Again:
Which one of your above Fre:ac (Free Audio Convertor) list will be displayed in Alt +T of Mp3tag?
These screenshots are from Fre:ac software. For your question, please refer to the screenshot I posted earlier.
This information would be more helpful if you would provide the relation to Mp3tag.
Which one exactly shows the same tags from Fre:ac in Mp3tag?
(There are many applications out there who claims to write tags into music files. )
When I ripped this CD, I let the database fill in the tags and I added the others manually, following your advice.
I've provided two screenshots: Puddletag and MP3Tag. They are ok, which shows that the tags are good.
Earlier, today, I opened one of the FLAC files in Fre:ac, to see if everything matched. It's a good match, so the software seems to be doing the job properly.
Note: this subject was related to a problem posed by a friend of mine, a great classical music lover, who doesn't know much about computers and who wanted to get the best possible information about his music for his audio player. 
