======================== unified (from filesystem) ========================
                                         'bitrate'  '117.221'
                                        'duration'  '170'
                                          'artist'  ('Standard Quartette, Dinwiddie Colored Quartet, Male Quartette, Apollo Male '
 'Quartette, Polk Miller and His Old South Quartette, Old South Quartette')
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Swing Low Sweet Chariot'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '23'
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'loc-namerica-country'
                                             'bpm'  '141.118'
                                             'key'  '10A'
                                        'acoustid'  'e641af3a-e208-4b96-9feb-02440d035cfb'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TBPM' (BPM (beats per minute))                     '141.118'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-country'
'TDOR' (Original release time)                      '1991'
'TDRC' (Recording time)                             '1991'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['producer', 'Johnny Parth']])
'TIT2' (Title/songname/content description)         'Swing Low Sweet Chariot'
'TKEY' (Initial key)                                '10A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Apollo Male Quartette'
'TPE2' (Band/orchestra/accompaniment)               ('Standard Quartette, Dinwiddie Colored Quartet, Male Quartette, Apollo Male '
 'Quartette, Polk Miller and His Old South Quartette, Old South Quartette')
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Document Records'
'TRCK' (Track number/Position in set)               '8/23'
'TSO2'                                              ('Standard Quartette, Dinwiddie Colored Quartet, Male Quartette, Apollo Male '
 'Quartette, Miller, Polk and His Old South Quartette, Old South Quartette')
'TSOP' (Performer sort order)                       'Apollo Male Quartette'
'TSSE' (Software/Hardware and settings used for encoding)  'Lavf56.40.101'
'TXXX:Acoustid Id'                                  'e641af3a-e208-4b96-9feb-02440d035cfb'
'TXXX:Artists'                                      'Apollo Male Quartette'
'TXXX:BARCODE'                                      '714298506129'
'TXXX:CATALOGNUMBER'                                'DOCD-5061'
'TXXX:DeviceConformanceTemplate'                    'L1'
'TXXX:IsVBR'                                        '1'
'TXXX:Length'                                       '170325'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:originalyear'                                 '1991'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.50 dB'
'TXXX:replaygain_track_peak'                        '0.450144'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'eeffc302-8bcb-46d1-bb7c-d8e185241ba3')

========================== row from database ==========================
                                              'id'  967405
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Old Country Music/Negro Vocal Quartets (1894-1928) - Swing Low Sweet Chariot.wma.mp3
                                         'working'  None
                                         'bitrate'  117
                                    'duration_sec'  170
                                           'genre'  loc-namerica-country
                                        'filesize'  2600314
                                           'mtime'  1621628251
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Country Music Negro Vocal Quartets (1894 1928) Chariot.wma loc namerica country
                                      'tag_artist'  Standard Quartette, Dinwiddie Colored Quartet, Male Quartette, Apollo Male Quartette, Polk Miller and His Old South Quartette, Old South Quartette
                                     'tag_release'  None
                                       'tag_title'  Swing Low Sweet Chariot
                                             'bpm'  141.118
                                    'search_title'  'chariot':4 'low':2 'sweet':3 'swing':1
                                   'search_artist'  'and':12 'apollo':9 'colored':5 'dinwiddie':4 'his':13 'male':8 'miller':11 'old':14 'polk':10 'quartet':6,7 'quartette':2,3 'south':15 'standard':1
                                  'search_release'  
                                     'search_rest'  '1894':9,10 '1928':11,12 'chariot':13 'chariotwma':15 'country':4 'exotica':2 'jazz':1 'loc':16 'music':5 'namerica':17 'negro':6 'oldies':3 'quartets':8 'vocal':7 'wma':14
                                    'search_combo'  '1894':28,29 '1928':30,31 'and':16B 'apollo':13B 'chariot':4A,32 'chariotwma':34 'colored':9B 'country':23 'dinwiddie':8B 'exotica':21 'his':17B 'jazz':20 'loc':35 'low':2A 'male':12B 'miller':15B 'music':24 'namerica':36 'negro':25 'old':18B 'oldies':22 'polk':14B 'quartet':10B,11B 'quartets':27 'quartette':6B,7B 'south':19B 'standard':5B 'sweet':3A 'swing':1A 'vocal':26 'wma':33
                                    'tag_tracknum'  8
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1991
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621628250.5379314  (2021-05-21 22:17:30)
                             'size'  2600314