======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '308'
                                          'artist'  'Das Ich'
                                     'text_people'  ''
                                         'release'  'Lava (Asche)'
                                           'title'  'Meine Wiege'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-2', 'Q-SYN-3', 'Q-PLAY-3', 'q-bass-3', 'Q-CHART-3', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', 'Q-MIXBEAT-2', "
 "'Q-BUSY-3', 'Q-GRIT-3']")
                                      'lastfmtags'  "['industrial', 'darkwave', 'ebm', 'gothic', 'german']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '10'
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'eid-ebm or industrial or darkwave-darkwave'
                                             'bpm'  '113.3'
                                             'key'  '7A'
                                        'acoustid'  'a27305fe-356e-46e7-b687-afacd7c02092'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Lava (Asche)'
'TBPM' (BPM (beats per minute))                     '113.3'
'TCON' (Content type, a.k.a. Genre)                 'eid-ebm or industrial or darkwave-darkwave'
'TDOR' (Original release time)                      '2004'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Meine Wiege'
'TKEY' (Initial key)                                '7A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Das Ich'
'TPE2' (Band/orchestra/accompaniment)               'Das Ich'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Art Music Group'
'TRCK' (Track number/Position in set)               '3/10'
'TSO2'                                              'Ich, Das'
'TSOP' (Performer sort order)                       'Ich, Das'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf57.41.100'
'TXXX:Acoustid Id'                                  'a27305fe-356e-46e7-b687-afacd7c02092'
'TXXX:Artists'                                      'Das Ich'
'TXXX:CATALOGNUMBER'                                'AMG 201'
'TXXX:MusicBrainz Album Artist Id'                  '7f74bf11-d450-4b85-b11d-4ca4131eedd5'
'TXXX:MusicBrainz Album Id'                         'c6046d38-a37f-3d82-ad2c-21737b4feb57'
'TXXX:MusicBrainz Album Release Country'            'RU'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        '7f74bf11-d450-4b85-b11d-4ca4131eedd5'
'TXXX:MusicBrainz Release Group Id'                 'f97e6c88-317b-3121-a128-6dce5f901eb3'
'TXXX:MusicBrainz Release Track Id'                 'a612b851-3892-3718-9a48-a4115bd858f2'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '3'
'TXXX:Q-GRIT'                                       '3'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-MIXBEAT'                                    '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-SYN'                                        '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['industrial', 'darkwave', 'ebm', 'gothic', 'german']
'TXXX:originalyear'                                 '2004'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-2.20 dB'
'TXXX:replaygain_track_peak'                        '0.444431'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'5c397378-5656-4ca5-be47-97c26dae6357')

========================== row from database ==========================
                                              'id'  1489911
                                            'path'  /data/Music/Bulk/00dwimp/2004 - Lava (Asche) (Remixed)/03 - Das Ich - Meine Wiege.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  308
                                           'genre'  eid-ebm or industrial or darkwave-darkwave
                                        'filesize'  12351774
                                           'mtime'  1620296255
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 2004 (Remixed) 03 eid ebm or industrial or darkwave darkwave
                                      'tag_artist'  Das Ich
                                     'tag_release'  Lava (Asche)
                                       'tag_title'  Meine Wiege
                                             'bpm'  113.3
                                    'search_title'  'meine':1 'wiege':2
                                   'search_artist'  'das':1 'ich':2
                                  'search_release'  'asche':2,3 'lava':1
                                     'search_rest'  '00dwimp':1 '2004':2 'darkwave':9 'ebm':6 'eid':5 'industrial':8 'or':7 'remixed':3,4
                                    'search_combo'  '00dwimp':8 '2004':9 'asche':6C,7C 'darkwave':16 'das':3B 'ebm':13 'eid':12 'ich':4B 'industrial':15 'lava':5C 'meine':1A 'or':14 'remixed':10,11 'wiege':2A
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'Q-MIXBEAT-2', 'Q-OLDST-3', 'Q-GRIT-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-CHART-3', 'q-drums-4', 'Q-SYN-3', 'q-other-2', 'Q-BUSY-3', 'Q-HAP-1', 'Q-PLAY-3', 'q-bass-3']
                                      'lastfmtags'  ['industrial', 'darkwave', 'ebm', 'gothic', 'german']
                                        'tag_date'  2005
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620296255.0920606  (2021-05-06 12:17:35)
                             'size'  12351774