======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '177'
                                          'artist'  'Croiners'
                                     'text_people'  ''
                                         'release'  'Introspective Retrospective, Volume 1'
                                           'title'  '[untitled]'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['tape music', 'noise', 'experimental']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '22'
                                      'tracktotal'  '36'
                                            'date'  '1987'
                                        'comments'  ''
                                           'genre'  'electronic-experimental'
                                             'bpm'  '142.4'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================

'TALB' (Album/Movie/Show title)                     'Introspective Retrospective, Volume 1'
'TBPM' (BPM (beats per minute))                     '142.4'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental'
'TDRC' (Recording time)                             '1987'
'TIT2' (Title/songname/content description)         '[untitled]'
'TKEY' (Initial key)                                '10B'
'TMED' (Media type)                                 'Cassette'
'TPE1' (Lead performer(s)/Soloist(s))               'Croiners'
'TPE2' (Band/orchestra/accompaniment)               'Croiners'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Jim Tapes'
'TRCK' (Track number/Position in set)               '22/36'
'TSO2'                                              'Croiners'
'TSOP' (Performer sort order)                       'Croiners'
'TXXX:CATALOGNUMBER'                                '003'
'TXXX:MusicBrainz Album Artist Id'                  '43ce2549-d07a-43a1-9128-78b2d13e4dc4'
'TXXX:MusicBrainz Album Id'                         'f52cc4f0-9471-446b-9236-e195c0257b35'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        '43ce2549-d07a-43a1-9128-78b2d13e4dc4'
'TXXX:MusicBrainz Release Group Id'                 'f4a2cbae-d8dc-4efd-afdf-c8d48b2a1bfc'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['tape music', 'noise', 'experimental']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.45 dB'
'TXXX:replaygain_track_peak'                        '0.440108'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'b587883e-f12f-4008-ae86-97116f6bcf0e')

========================== row from database ==========================
                                              'id'  723729
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Croiners - Introspective Retrospective, Volume 1/22 - Croiners - [untitled].mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  177
                                           'genre'  electronic-experimental
                                        'filesize'  5682303
                                           'mtime'  1636916835
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 22 electronic experimental
                                      'tag_artist'  Croiners
                                     'tag_release'  Introspective Retrospective, Volume 1
                                       'tag_title'  [untitled]
                                             'bpm'  142.4
                                    'search_title'  'untitled':1,2
                                   'search_artist'  'croiners':1
                                  'search_release'  '1':5 'introspective':1 'retrospective':2,3 'volume':4
                                     'search_rest'  '22':1 'electronic':2 'experimental':3
                                    'search_combo'  '1':8C '22':9 'croiners':3B 'electronic':10 'experimental':11 'introspective':4C 'retrospective':5C,6C 'untitled':1A,2A 'volume':7C
                                    'tag_tracknum'  22
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-3', 'q-chart-1', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['tape music', 'noise', 'experimental']
                                        'tag_date'  1987
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1636916835.3188887  (2021-11-14 20:07:15)
                             'size'  5682303