======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '195'
                                          'artist'  'Memphis Minnie & Kansas Joe'
                                     'text_people'  ''
                                         'release'  ('1929-1934 Recordings in Chronological Order, Volume 2: 5 June 1930 to 30 '
 'January 1931')
                                           'title'  'Preachers Blues'
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 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
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                                      'lastfmtags'  "['blues', 'delta blues', 'guitarist', 'oldies', '1307fh']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '21'
                                      'tracktotal'  '23'
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '112.134'
                                             'key'  '8A'
                                        'acoustid'  '1b8114d9-05c2-49e3-ae3e-ea5650ffeba6'
rest: ''

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

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'TALB' (Album/Movie/Show title)                     ('1929-1934 Recordings in Chronological Order, Volume 2: 5 June 1930 to 30 '
 'January 1931')
'TBPM' (BPM (beats per minute))                     '112.134'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDOR' (Original release time)                      '1991'
'TDRC' (Recording time)                             '1935'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['producer', 'Gary Atkinson'], ['producer', 'Johnny Parth']])
'TIT2' (Title/songname/content description)         'Preachers Blues'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '195631'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Kansas Joe'
'TPE2' (Band/orchestra/accompaniment)               'Memphis Minnie & Kansas Joe'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Document Records'
'TRCK' (Track number/Position in set)               '21/23'
'TSO2'                                              'Memphis Minnie & McCoy, Kansas Joe'
'TSOP' (Performer sort order)                       'McCoy, Kansas Joe'
'TXXX:Acoustid Id'                                  '1b8114d9-05c2-49e3-ae3e-ea5650ffeba6'
'TXXX:BARCODE'                                      '714298502923'
'TXXX:CATALOGNUMBER'                                'DOCD-5029'
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'TXXX:MusicBrainz Album Release Country'            'AT'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'compilation'
'TXXX:MusicBrainz Artist Id'                        '302886da-969c-44da-b6c5-3f4eea07ea49'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['blues', 'delta blues', 'guitarist', 'oldies', '1307fh']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
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'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.43 dB'
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========================== row from database ==========================
                                              'id'  1522919
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/30_s collection/ma rainey - preachers blues 1931.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  195
                                           'genre'  prerock-jb-blues
                                        'filesize'  3153878
                                           'mtime'  1620402198
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 30_s collection ma rainey preachers blues prerock jb blues
                                      'tag_artist'  Memphis Minnie & Kansas Joe
                                     'tag_release'  1929-1934 Recordings in Chronological Order, Volume 2: 5 June 1930 to 30 January 1931
                                       'tag_title'  Preachers Blues
                                             'bpm'  112.134
                                    'search_title'  'blues':2 'preachers':1
                                   'search_artist'  'joe':4 'kansas':3 'memphis':1 'minnie':2
                                  'search_release'  '1929':1 '19291934':3 '1930':14 '1931':18 '1934':2 '2':10,11 '30':16 '5':12 'chronological':6 'in':5 'january':17 'june':13 'order':7,8 'recordings':4 'to':15 'volume':9
                                     'search_rest'  '30':5 'blues':11 'collection':7 'country':4 'exotica':2 'jazz':1 'jb':13 'ma':8 'oldies':3 'preachers':10 'prerock':12 'rainey':9 's':6
                                    'search_combo'  '1929':7C '19291934':9C '1930':20C '1931':24C '1934':8C '2':16C,17C '30':22C,29 '5':18C 'blues':2A,35 'chronological':12C 'collection':31 'country':28 'exotica':26 'in':11C 'january':23C 'jazz':25 'jb':37 'joe':6B 'june':19C 'kansas':5B 'ma':32 'memphis':3B 'minnie':4B 'oldies':27 'order':13C,14C 'preachers':1A,34 'prerock':36 'rainey':33 'recordings':10C 's':30 'to':21C 'volume':15C
                                    'tag_tracknum'  21
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'delta blues', 'guitarist', 'oldies', '1307fh']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620402197.612743  (2021-05-07 17:43:17)
                             'size'  3153878