======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '69'
                                          'artist'  'Cassius'
                                     'text_people'  ''
                                         'release'  '1999'
                                           'title'  'Invisible'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-LOCALNESS-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'house', 'electronica', 'electronic', 'french']"
                                     'discogstags'  "['electronic', 'house', 'electro']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  '16'
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '132.185'
                                             'key'  '8A'
                                        'acoustid'  '92991ec3-73d4-4456-baec-a183c9f561b8'
rest: ''

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

'PRIV:AverageLevel:;\x0c\x00\x00'                   PRIV(owner='AverageLevel', data=b';\x0c\x00\x00')
'PRIV:PeakValue:ñf\x00\x00'                         PRIV(owner='PeakValue', data=b'\xf1f\x00\x00')
'TALB' (Album/Movie/Show title)                     '1999'
'TBPM' (BPM (beats per minute))                     '132.185'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDOR' (Original release time)                      '1999'
'TDRC' (Recording time)                             '1999-01-25'
'TIT2' (Title/songname/content description)         'Invisible'
'TKEY' (Initial key)                                '8A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Cassius'
'TPE2' (Band/orchestra/accompaniment)               'Cassius'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Virgin France S.A.'
'TRCK' (Track number/Position in set)               '15/16'
'TSO2'                                              'Cassius'
'TSOP' (Performer sort order)                       'Cassius'
'TSRC' (ISRC (international standard recording code))  'FROIQ9800013'
'TXXX:ASIN'                                         'B000023Z9C'
'TXXX:Acoustid Id'                                  '92991ec3-73d4-4456-baec-a183c9f561b8'
'TXXX:BARCODE'                                      '724384670122'
'TXXX:CATALOGNUMBER'                                '07243 84 6701 2 2'
'TXXX:MusicBrainz Album Artist Id'                  '256160e8-37fd-4f8c-a3ef-530ebbaa4b3d'
'TXXX:MusicBrainz Album Id'                         'cb844a4d-c02f-3199-b949-1656b36722da'
'TXXX:MusicBrainz Album Release Country'            'FR'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '256160e8-37fd-4f8c-a3ef-530ebbaa4b3d'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['electronic', 'house', 'electro']
'TXXX:lastfmtags'                                   ['dance', 'house', 'electronica', 'electronic', 'french']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.00 dB'
'TXXX:replaygain_track_peak'                        '0.956438'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'8c9ee1d0-878c-4436-8a1e-356b60cba38b')

========================== row from database ==========================
                                              'id'  1347700
                                            'path'  /data/Music/Bulk/00poprockelectronic/Cassius/1999/15 Invisible.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  69
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  1119573
                                           'mtime'  1621630152
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 15 electronic generic or radio dance
                                      'tag_artist'  Cassius
                                     'tag_release'  1999
                                       'tag_title'  Invisible
                                             'bpm'  132.185
                                    'search_title'  'invisible':1
                                   'search_artist'  'cassius':1
                                  'search_release'  '1999':1
                                     'search_rest'  '00poprockelectronic':1 'dance':6 'electronic':2 'generic':3 'or':4 'radio':5
                                    'search_combo'  '00poprockelectronic':4 '1999':3C 'cassius':2B 'dance':9 'electronic':5 'generic':6 'invisible':1A 'or':7 'radio':8
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-3', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'house', 'electronica', 'electronic', 'french']
                                        'tag_date'  1999
                                     'discogstags'  ['electronic', 'house', 'electro']

============================== file details ==============================
                                           'mtime'  1621630151.79791  (2021-05-21 22:49:11)
                             'size'  1119573