======================== unified (from filesystem) ========================
                                         'bitrate'  '232.075'
                                        'duration'  '223'
                                          'artist'  'Rammstein'
                                     'text_people'  'Rammstein'
                                         'release'  'Rosenrot'
                                           'title'  'Ein Lied'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-4', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['industrial metal', 'german', 'industrial', 'metal', 'rock']"
                                     'discogstags'  "['electronic', 'rock', 'alternative rock', 'electro']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'eid-metal-industrial'
                                             'bpm'  '140.1'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Rosenrot'
'TBPM' (BPM (beats per minute))                     '140.1'
'TCOM' (Composer)                                   'Rammstein'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-industrial'
'TDOR' (Original release time)                      '2005'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Ein Lied'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Rammstein'
'TPE2' (Band/orchestra/accompaniment)               'Rammstein'
'TPUB' (Publisher)                                  'Universal International'
'TRCK' (Track number/Position in set)               '11'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.40.101'
'TXXX:AverageLevel'                                 '3451'
'TXXX:DeviceConformanceTemplate'                    'L1'
'TXXX:IsVBR'                                        '0'
'TXXX:PeakValue'                                    '32673'
'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:WM/EncodingTime'                              '18446744072133790976'
'TXXX:WM/MediaPrimaryClassID'                       '{D1607DBC-E323-4BE2-86A1-48A42A28441E}'
'TXXX:WM/Provider'                                  'AMG'
'TXXX:WM/ProviderRating'                            '4'
'TXXX:WM/ProviderStyle'                             'Rock'
'TXXX:WM/UniqueFileIdentifier'                      'AMGa_id=R   806875;AMGp_id=P   198625;AMGt_id=T  8527448'
'TXXX:WM/Year'                                      '2005'
'TXXX:WMFSDKNeeded'                                 '0.0.0.0000'
'TXXX:WMFSDKVersion'                                '11.0.5721.5145'
'TXXX:discogstags'                                  ['electronic', 'rock', 'alternative rock', 'electro']
'TXXX:lastfmtags'                                   ['industrial metal', 'german', 'industrial', 'metal', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'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'                        '-2.00 dB'
'TXXX:replaygain_track_peak'                        '0.844161'

========================== row from database ==========================
                                              'id'  1306289
                                            'path'  /data/Music/Bulk/00poprockelectronic/Rammstein/Rosenrot/11 Ein Lied.wma.mp3
                                         'working'  None
                                         'bitrate'  232
                                    'duration_sec'  223
                                           'genre'  eid-metal-industrial
                                        'filesize'  6488848
                                           'mtime'  1620311107
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 11 Lied.wma eid metal industrial
                                      'tag_artist'  Rammstein
                                     'tag_release'  Rosenrot
                                       'tag_title'  Ein Lied
                                             'bpm'  140.1
                                    'search_title'  'ein':1 'lied':2
                                   'search_artist'  'rammstein':1
                                  'search_release'  'rosenrot':1
                                     'search_rest'  '00poprockelectronic':1 'eid':5 'industrial':7 'lied':2 'liedwma':4 'metal':6 'wma':3
                                    'search_combo'  '00poprockelectronic':5 'eid':9 'ein':1A 'industrial':11 'lied':2A,6 'liedwma':8 'metal':10 'rammstein':3B 'rosenrot':4C 'wma':7
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             '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-1', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['industrial metal', 'german', 'industrial', 'metal', 'rock']
                                        'tag_date'  2005
                                     'discogstags'  ['electronic', 'rock', 'alternative rock', 'electro']

============================== file details ==============================
                                           'mtime'  1620311107.163364  (2021-05-06 16:25:07)
                             'size'  6488848