======================== unified (from filesystem) ========================
                                         'bitrate'  '110.339'
                                        'duration'  '213'
                                          'artist'  'Mahalia Jackson'
                                     'text_people'  ''
                                         'release'  'The Roots Of Black Gospel'
                                           'title'  'Amazing Grace'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-1', 'Q-HHRNBTT-1', 'Q-UNU-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']")
                                      'lastfmtags'  "['gospel', 'jazz', 'female vocalists', 'soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'loc-namerica-gospel'
                                             'bpm'  '143.112'
                                             'key'  '4A'
                                        '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))                     '143.112'
'TCON' (Content type, a.k.a. Genre)                 'loc-namerica-gospel'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Amazing Grace'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Mahalia Jackson'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1'
'TRCK' (Track number/Position in set)               '01'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['gospel', 'jazz', 'female vocalists', 'soul']
'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'                        '-0.39 dB'
'TXXX:replaygain_track_peak'                        '0.430522'

========================== row from database ==========================
                                              'id'  673571
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/The Roots of Black Gospel/cd 1/01 - Mahalia Jackson - Amazing Grace.mp3
                                         'working'  None
                                         'bitrate'  110
                                    'duration_sec'  213
                                           'genre'  loc-namerica-gospel
                                        'filesize'  3075266
                                           'mtime'  1621628386
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country of cd 1 01 loc namerica gospel
                                      'tag_artist'  Mahalia Jackson
                                     'tag_release'  The Roots Of Black Gospel
                                       'tag_title'  Amazing Grace
                                             'bpm'  143.112
                                    'search_title'  'amazing':1 'grace':2
                                   'search_artist'  'jackson':2 'mahalia':1
                                  'search_release'  'black':4 'gospel':5 'of':3 'roots':2 'the':1
                                     'search_rest'  '1':7 'cd':6 'country':4 'exotica':2 'gospel':10 'jazz':1 'loc':8 'namerica':9 'of':5 'oldies':3
                                    'search_combo'  '1':16 'amazing':1A 'black':8C 'cd':15 'country':13 'exotica':11 'gospel':9C,19 'grace':2A 'jackson':4B 'jazz':10 'loc':17 'mahalia':3B 'namerica':18 'of':7C,14 'oldies':12 'roots':6C 'the':5C
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  4A
                                           '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-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'  ['gospel', 'jazz', 'female vocalists', 'soul']
                                        'tag_date'  2003
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621628385.9162936  (2021-05-21 22:19:45)
                             'size'  3075266