======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '128'
                                          'artist'  'The Versatiles'
                                     'text_people'  ''
                                         'release'  'Explosive Doowops - Vol. 01 (Bb 55021)'
                                           'title'  'Passing By'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', "
 "'Q-OLDST-2', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['reggae', 'trojan', 'skinhead reggae', 'ska', 'rocksteady']"
                                     'discogstags'  "['reggae']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '20'
                                      'tracktotal'  ''
                                            'date'  '1960'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-doowop'
                                             'bpm'  '134.5'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Explosive Doowops - Vol. 01 (Bb 55021)'
'TBPM' (BPM (beats per minute))                     '134.5'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-doowop'
'TDRC' (Recording time)                             '1960'
'TIT2' (Title/songname/content description)         'Passing By'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Versatiles'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '20'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'reggae'
'TXXX:lastfmtags'                                   ['reggae', 'trojan', 'skinhead reggae', 'ska', 'rocksteady']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.95 dB'
'TXXX:replaygain_track_peak'                        '0.493848'

========================== row from database ==========================
                                              'id'  947764
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/va - Explosive Doowops - Vol. 01 (Bb 55021)/20 - The Versatiles - Passing By.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  128
                                           'genre'  rock-pop-early-doowop
                                        'filesize'  2061847
                                           'mtime'  1620736394
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm va 20 rock pop early doowop
                                      'tag_artist'  The Versatiles
                                     'tag_release'  Explosive Doowops - Vol. 01 (Bb 55021)
                                       'tag_title'  Passing By
                                             'bpm'  134.5
                                    'search_title'  'by':2 'passing':1
                                   'search_artist'  'the':1 'versatiles':2
                                  'search_release'  '55021':7,8 'bb':5,6 'doowops':2 'explosive':1 'vol':3,4
                                     'search_rest'  '20':2 'doowop':6 'early':5 'pop':4 'rock':3 'va':1
                                    'search_combo'  '20':14 '55021':11C,12C 'bb':9C,10C 'by':2A 'doowop':18 'doowops':6C 'early':17 'explosive':5C 'passing':1A 'pop':16 'rock':15 'the':3B 'va':13 'versatiles':4B 'vol':7C,8C
                                    'tag_tracknum'  20
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['reggae', 'trojan', 'skinhead reggae', 'ska', 'rocksteady']
                                        'tag_date'  1960
                                     'discogstags'  ['reggae']

============================== file details ==============================
                                           'mtime'  1620736394.0189462  (2021-05-11 14:33:14)
                             'size'  2061847