Scripts:
Default (currently used)
artist | year - album
$if($or($stricmp(%album artist%,'<various artists>'),$stricmp(%album artist%,'VA'),$stricmp(%album artist%,'various'),$stricmp(%album artist%,'Various Artists')),'< various artists >',$swapprefix($trim(%album artist%)))|$if($or($stricmp(%album artist%,'<various artists>'),$stricmp(%album artist%,'VA'),$stricmp(%album artist%,'various'),$stricmp(%album artist%,'Various Artists'),$not($or($meta_test(artist),$meta_test(album artist)))),,[$year($if2(%date%,%releasedate%)) - ])%album%|[Disc $num(%discnumber%,2)[ - $if3(%discsubtitle%,%disctitle%,%discname%)]|][%tracknumber%. ][%track artist% - ]%title%
temporarily I'm switching to other scripts which are minor customizations of this.
Tags used: most of tracks have all of these tags
ARTIST
TITLE
ALBUM
DATE
GENRE
PERFORMER
TRACKNUMBER
TOTALTRACKS
COMMENT (about 50% estimated)
About 30% tracks estimated has also these tags:
RELEASEDATE
LABEL
CATALOG
COUNTRY
DISCID
ISRC
Newly added tracks (about 20% estimated) also contain set of 15 tags starting with DISCOGS_.....
and also some other set of tags like MUSICBRAINZ_...... tags
All or almost all tracks have replaygain_album_gain, replaygain_album_peak, replaygain_track_gain and replaygain_track_peak
Also this may do matter that part of albums are stored as 1 file with embedded CUEsheet and subsong indexes (estimate 10% of total)
Also it may play some role that all music files are stored on external USB2 drives (slow access) - G:\music and I:\music