======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '283'
                                          'artist'  'Rammstein'
                                     'text_people'  ''
                                         'release'  'Sehnsucht'
                                           'title'  'Spiel mit mir'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-3', 'q-busy-4', 'q-grit-4', 'q-play-3', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['industrial metal', 'german', 'industrial', 'metal', 'rock']"
                                     'discogstags'  "['electronic', 'rock', 'industrial']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  '12'
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'eid-ebm or industrial or darkwave'
                                             'bpm'  '104.6'
                                             'key'  '12B'
                                        'acoustid'  '0bb78eb9-87e0-4157-85b4-e7de2233cdd8'
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Sehnsucht'
'TBPM' (BPM (beats per minute))                     '104.6'
'TCON' (Content type, a.k.a. Genre)                 'eid-ebm or industrial or darkwave'
'TDOR' (Original release time)                      '1997'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Spiel mit mir'
'TKEY' (Initial key)                                '12B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Rammstein'
'TPE2' (Band/orchestra/accompaniment)               'Rammstein'
'TPOS' (Part of a set)                              '1/2'
'TPUB' (Publisher)                                  'Motor Music/Motor Music'
'TRCK' (Track number/Position in set)               '7/12'
'TSO2'                                              'Rammstein'
'TSOP' (Performer sort order)                       'Rammstein'
'TSRC' (ISRC (international standard recording code))  'DED579704030/DED679704030'
'TXXX:ASIN'                                         'B0000057C5'
'TXXX:Acoustid Id'                                  '0bb78eb9-87e0-4157-85b4-e7de2233cdd8'
'TXXX:BARCODE'                                      '0731454961721'
'TXXX:CATALOGNUMBER'                                '549 617-2'
'TXXX:MusicBrainz Album Artist Id'                  'b2d122f9-eadb-4930-a196-8f221eeb0c66'
'TXXX:MusicBrainz Album Id'                         'c57b9cc3-4f1b-4f2d-b815-e78126c659ff'
'TXXX:MusicBrainz Album Release Country'            'AU'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'b2d122f9-eadb-4930-a196-8f221eeb0c66'
'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']
'TXXX:lastfmtags'                                   ['industrial metal', 'german', 'industrial', 'metal', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '4'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.29 dB'
'TXXX:replaygain_track_peak'                        '0.404944'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'6fa7e767-722c-4642-a550-0b07c1326168')

========================== row from database ==========================
                                              'id'  1285001
                                            'path'  /data/Music/Bulk/00poprockelectronic/Rammstein/Sehnsucht/Rammstein - Spiel Mit Mir - 07.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  283
                                           'genre'  eid-ebm or industrial or darkwave
                                        'filesize'  4543788
                                           'mtime'  1620296960
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Mit Mir 07 eid ebm or industrial or darkwave
                                      'tag_artist'  Rammstein
                                     'tag_release'  Sehnsucht
                                       'tag_title'  Spiel mit mir
                                             'bpm'  104.6
                                    'search_title'  'mir':3 'mit':2 'spiel':1
                                   'search_artist'  'rammstein':1
                                  'search_release'  'sehnsucht':1
                                     'search_rest'  '00poprockelectronic':1 'darkwave':8 'ebm':5 'eid':4 'industrial':7 'mir':3 'mit':2 'or':6
                                    'search_combo'  '00poprockelectronic':6 'darkwave':13 'ebm':10 'eid':9 'industrial':12 'mir':3A,8 'mit':2A,7 'or':11 'rammstein':4B 'sehnsucht':5C 'spiel':1A
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-4', 'q-drums-3', 'q-syn-3', 'q-chart-4', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['industrial metal', 'german', 'industrial', 'metal', 'rock']
                                        'tag_date'  2001
                                     'discogstags'  ['electronic', 'rock', 'industrial']

============================== file details ==============================
                                           'mtime'  1620296960.1108358  (2021-05-06 12:29:20)
                             'size'  4543788