======================== unified (from filesystem) ========================
                                         'bitrate'  '143.776'
                                        'duration'  '155'
                                          'artist'  'Louis Armstrong & Lyn Murray Choir'
                                     'text_people'  ''
                                         'release'  'The Roots Of Black Gospel'
                                           'title'  'Shadrack'
                                           '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-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'loc-namerica-gospel'
                                             'bpm'  '89.890'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'The Roots Of Black Gospel'
'TBPM' (BPM (beats per minute))                     '89.890'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-gospel'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Shadrack'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Louis Armstrong & Lyn Murray Choir'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '3'
'TRCK' (Track number/Position in set)               '4'
'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:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'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'                        '+3.25 dB'
'TXXX:replaygain_track_peak'                        '0.765790'

========================== row from database ==========================
                                              'id'  670946
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/The Roots of Black Gospel/cd 3/04 - Louis Armstrong & Lyn Murray C - Shadrack.mp3
                                         'working'  None
                                         'bitrate'  143
                                    'duration_sec'  155
                                           'genre'  loc-namerica-gospel
                                        'filesize'  2914603
                                           'mtime'  1621628397
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country of cd 3 04 loc namerica gospel
                                      'tag_artist'  Louis Armstrong & Lyn Murray Choir
                                     'tag_release'  The Roots Of Black Gospel
                                       'tag_title'  Shadrack
                                             'bpm'  89.89
                                    'search_title'  'shadrack':1
                                   'search_artist'  'armstrong':2 'choir':5 'louis':1 'lyn':3 'murray':4
                                  'search_release'  'black':4 'gospel':5 'of':3 'roots':2 'the':1
                                     'search_rest'  '3':7 'cd':6 'country':4 'exotica':2 'gospel':10 'jazz':1 'loc':8 'namerica':9 'of':5 'oldies':3
                                    'search_combo'  '3':18 'armstrong':3B 'black':10C 'cd':17 'choir':6B 'country':15 'exotica':13 'gospel':11C,21 'jazz':12 'loc':19 'louis':2B 'lyn':4B 'murray':5B 'namerica':20 'of':9C,16 'oldies':14 'roots':8C 'shadrack':1A 'the':7C
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  3A
                                           '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-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  2003
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621628397.1305628  (2021-05-21 22:19:57)
                             'size'  2914603