======================== unified (from filesystem) ========================
                                         'bitrate'  '138.867'
                                        'duration'  '156'
                                          'artist'  'The Golden Gate Quartet'
                                     'text_people'  ''
                                         'release'  'The Roots Of Black Gospel'
                                           'title'  'High Low And Wide'
                                           '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'  "['fip', 'jazz', 'spiritual', 'soul', 'gospel', 'blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '18'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'loc-namerica-gospel;set-pl-mor'
                                             'bpm'  '90.776'
                                             'key'  '7B'
                                        '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))                     '90.776'
'TCON' (Content type, a.k.a. Genre)                 ['loc-namerica-gospel', 'set-pl-mor']
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'High Low And Wide'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'The Golden Gate Quartet'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '3'
'TRCK' (Track number/Position in set)               '18'
'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'                                   ['fip', 'jazz', 'spiritual', 'soul', 'gospel', 'blues']
'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'                        '+2.85 dB'
'TXXX:replaygain_track_peak'                        '0.467270'

========================== row from database ==========================
                                              'id'  673552
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/The Roots of Black Gospel/cd 3/18 - The Golden Gate Quartet - High Low And Wide.mp3
                                         'working'  None
                                         'bitrate'  138
                                    'duration_sec'  156
                                           'genre'  loc-namerica-gospel;set-pl-mor
                                        'filesize'  2836108
                                           'mtime'  1621628403
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country of cd 3 18 loc namerica gospel;set pl mor
                                      'tag_artist'  The Golden Gate Quartet
                                     'tag_release'  The Roots Of Black Gospel
                                       'tag_title'  High Low And Wide
                                             'bpm'  90.776
                                    'search_title'  'and':3 'high':1 'low':2 'wide':4
                                   'search_artist'  'gate':3 'golden':2 'quartet':4 'the':1
                                  'search_release'  'black':4 'gospel':5 'of':3 'roots':2 'the':1
                                     'search_rest'  '18':8 '3':7 'cd':6 'country':4 'exotica':2 'gospel':11,13 'jazz':1 'loc':9 'mor':16 'namerica':10 'of':5 'oldies':3 'pl':15 'set':12,14
                                    'search_combo'  '18':21 '3':20 'and':3A 'black':12C 'cd':19 'country':17 'exotica':15 'gate':7B 'golden':6B 'gospel':13C,24,26 'high':1A 'jazz':14 'loc':22 'low':2A 'mor':29 'namerica':23 'of':11C,18 'oldies':16 'pl':28 'quartet':8B 'roots':10C 'set':25,27 'the':5B,9C 'wide':4A
                                    'tag_tracknum'  18
                                      'num_images'  1
                                             'key'  7B
                                           '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'  ['fip', 'jazz', 'spiritual', 'soul', 'gospel', 'blues']
                                        'tag_date'  2003
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621628402.8371944  (2021-05-21 22:20:02)
                             'size'  2836108