======================== unified (from filesystem) ========================
                                         'bitrate'  '193.249'
                                        'duration'  '284'
                                          'artist'  'Rammstein'
                                     'text_people'  'Rammstein'
                                         'release'  'Herzeleid'
                                           'title'  'Heirate mich'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['industrial metal', 'german', 'industrial', 'metal', 'rock']"
                                     'discogstags'  "['electronic', 'rock', 'industrial', 'heavy metal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '11'
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'eid-metal-industrial'
                                             'bpm'  '95'
                                             'key'  '9A'
                                        'acoustid'  'c12267f9-817f-4ab8-b815-c9e80eff95c6'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Herzeleid'
'TBPM' (BPM (beats per minute))                     '95'
'TCOM' (Composer)                                   'Rammstein'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-industrial'
'TDOR' (Original release time)                      '1995'
'TDRC' (Recording time)                             '1998-06-29'
'TEXT' (Lyricist/Text writer)                       'Rammstein'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['mix', 'Ronald Prent'], ['producer', 'Jacob Hellner'], ['producer', 'Carl-Michael Herlöfsson'], ['bass guitar', 'Oliver Riedel'], ['vocals', 'Till Lindemann'], ['membranophone', 'Christoph Schneider'], ['guitar family', 'Richard Z. Kruspe'], ['guitar family', 'Paul Landers'], ['keyboard', 'Christian Lorenz']])
'TIT2' (Title/songname/content description)         'Heirate mich'
'TKEY' (Initial key)                                '9A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Rammstein'
'TPE2' (Band/orchestra/accompaniment)               'Rammstein'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Motor Music'
'TRCK' (Track number/Position in set)               '8/11'
'TSO2'                                              'Rammstein'
'TSOC'                                              'Rammstein'
'TSOP' (Performer sort order)                       'Rammstein'
'TSRC' (ISRC (international standard recording code))  'DED579505260'
'TXXX:ASIN'                                         'B000003RCY'
'TXXX:Acoustid Id'                                  'c12267f9-817f-4ab8-b815-c9e80eff95c6'
'TXXX:Artists'                                      'Rammstein'
'TXXX:BARCODE'                                      '731452916020'
'TXXX:CATALOGNUMBER'                                '529 160-2'
'TXXX:Encoder'                                      'MPEGPlus (Stream 7, Profile Unknown)'
'TXXX:Fmps_rating'                                  '0.6'
'TXXX:Fmps_rating_amarok_score'                     '0.005'
'TXXX:MusicBrainz Album Artist Id'                  'b2d122f9-eadb-4930-a196-8f221eeb0c66'
'TXXX:MusicBrainz Album Id'                         'abfabaf6-5493-3e96-976e-7fbefc3efa9d'
'TXXX:MusicBrainz Album Release Country'            'DE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'b2d122f9-eadb-4930-a196-8f221eeb0c66'
'TXXX:MusicBrainz Release Group Id'                 '806eb9e1-06c6-385e-bf04-f3c5e2b4a6be'
'TXXX:MusicBrainz Release Track Id'                 '06d85a14-6862-3fdc-90aa-1537721cde1f'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['electronic', 'rock', 'industrial', 'heavy metal']
'TXXX:lastfmtags'                                   ['industrial metal', 'german', 'industrial', 'metal', 'rock']
'TXXX:originalyear'                                 '1995'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.30 dB'
'TXXX:replaygain_track_peak'                        '0.528338'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'65d9da6c-524d-4d7d-90ea-a3e83fb73499')

========================== row from database ==========================
                                              'id'  1401871
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Rammstein/01. Herzeleid (1995) [MPC.Q10]/08. Heirate Mich.mp3
                                         'working'  None
                                         'bitrate'  193
                                    'duration_sec'  284
                                           'genre'  eid-metal-industrial
                                        'filesize'  6977495
                                           'mtime'  1620311077
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 01. (1995) [MPC.Q10] 08. Mich metal industrial
                                      'tag_artist'  Rammstein
                                     'tag_release'  Herzeleid
                                       'tag_title'  Heirate mich
                                             'bpm'  95.0
                                    'search_title'  'heirate':1 'mich':2
                                   'search_artist'  'rammstein':1
                                  'search_release'  'herzeleid':1
                                     'search_rest'  '00dwimp':1 '00metal':2 '01':3,4 '08':10,11 '1995':5,6 'industrial':14 'metal':13 'mich':12 'mpc':7 'mpcq10':9 'q10':8
                                    'search_combo'  '00dwimp':5 '00metal':6 '01':7,8 '08':14,15 '1995':9,10 'heirate':1A 'herzeleid':4C 'industrial':18 'metal':17 'mich':2A,16 'mpc':11 'mpcq10':13 'q10':12 'rammstein':3B
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['industrial metal', 'german', 'industrial', 'metal', 'rock']
                                        'tag_date'  1998
                                     'discogstags'  ['electronic', 'rock', 'industrial', 'heavy metal']

============================== file details ==============================
                                           'mtime'  1620311077.3861973  (2021-05-06 16:24:37)
                             'size'  6977495