======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '257'
                                          'artist'  'The Songrise Orchestra'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Streets of Philadelphia'
                                           'quals'  ("['Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'q-syn-2', "
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                                      'lastfmtags'  ("['easy listening', 'adult contemporary', 'progressive rock', 'mellow', "
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                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  '17'
                                            'date'  ''
                                        'comments'  ''
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                                             'bpm'  '93.8'
                                             'key'  '7B'
                                        'acoustid'  'd79991d2-8171-4286-8bcf-5c54321257eb'
rest: ''

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

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'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio'
'TIT2' (Title/songname/content description)         'Streets of Philadelphia'
'TKEY' (Initial key)                                '7B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The Songrise Orchestra'
'TPE2' (Band/orchestra/accompaniment)               'The Songrise Orchestra'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  "Hits'N'Hits"
'TRCK' (Track number/Position in set)               '5/17'
'TSO2'                                              'Songrise Orchestra, The'
'TSOP' (Performer sort order)                       'Songrise Orchestra, The'
'TXXX:Acoustid Id'                                  'd79991d2-8171-4286-8bcf-5c54321257eb'
'TXXX:BARCODE'                                      '5708574338318'
'TXXX:CATALOGNUMBER'                                '3831CD'
'TXXX:MusicBrainz Album Artist Id'                  '8891bd4c-bd0f-462e-af33-62f8b2328023'
'TXXX:MusicBrainz Album Id'                         'ccf27b6d-ae4f-4936-91d6-1c1876f62a54'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        '8891bd4c-bd0f-462e-af33-62f8b2328023'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['easy listening', 'adult contemporary', 'progressive rock', 'mellow', 'guitar']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.32 dB'
'TXXX:replaygain_track_peak'                        '0.596253'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'123f5b93-0eb5-43ec-868a-3ff93f1cb3d8')

========================== row from database ==========================
                                              'id'  1471364
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/Bruce Springsteen/Unknown/01 - The streets of Philladelphia(2).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  257
                                           'genre'  electronic-generic or radio
                                        'filesize'  4119295
                                           'mtime'  1630249319
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted Bruce Springsteen Unknown 01 streets Philladelphia(2) electronic generic or radio
                                      'tag_artist'  The Songrise Orchestra
                                     'tag_release'  None
                                       'tag_title'  Streets of Philadelphia
                                             'bpm'  93.8
                                    'search_title'  'of':2 'philadelphia':3 'streets':1
                                   'search_artist'  'orchestra':3 'songrise':2 'the':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '2':8 'bruce':3 'electronic':10 'generic':11 'or':12 'philladelphia':7 'philladelphia2':9 'radio':13 'springsteen':4 'streets':6 'unknown':5 'unsorted':2
                                    'search_combo'  '00poprockelectronic':7 '2':14 'bruce':9 'electronic':16 'generic':17 'of':2A 'or':18 'orchestra':6B 'philadelphia':3A 'philladelphia':13 'philladelphia2':15 'radio':19 'songrise':5B 'springsteen':10 'streets':1A,12 'the':4B 'unknown':11 'unsorted':8
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['easy listening', 'adult contemporary', 'progressive rock', 'mellow', 'guitar']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1630249318.7742944  (2021-08-29 17:01:58)
                             'size'  4119295