======================== unified (from filesystem) ========================
                                         'bitrate'  '205.997'
                                        'duration'  '208'
                                          'artist'  'Lucifer'
                                     'text_people'  ''
                                         'release'  'Black Mass'
                                           'title'  "Solomon's Ring"
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['death metal', 'hard rock', 'doom metal', 'psychedelic rock', 'occult rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '01'
                                      'tracktotal'  ''
                                            'date'  '1971'
                                        'comments'  ''
                                           'genre'  'eid-metal-death'
                                             'bpm'  '145.3'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         'vinyl rip'
'TALB' (Album/Movie/Show title)                     'Black Mass'
'TBPM' (BPM (beats per minute))                     '145.3'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-death'
'TDRC' (Recording time)                             '1971'
'TIT2' (Title/songname/content description)         "Solomon's Ring"
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Lucifer'
'TRCK' (Track number/Position in set)               '01'
'TXXX:Q-HAP'                                        '1'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['death metal', 'hard rock', 'doom metal', 'psychedelic rock', 'occult rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.23 dB'
'TXXX:replaygain_track_peak'                        '0.686633'

========================== row from database ==========================
                                              'id'  1515347
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/lucifer (aka mort garson) - black mass (1971)/01_solomon_s ring.mp3
                                         'working'  None
                                         'bitrate'  206
                                    'duration_sec'  208
                                           'genre'  eid-metal-death
                                        'filesize'  5363584
                                           'mtime'  1620302132
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm lucifer (aka mort garson) black mass (1971) 01_solomon_s ring eid metal death
                                      'tag_artist'  Lucifer
                                     'tag_release'  Black Mass
                                       'tag_title'  Solomon's Ring
                                             'bpm'  145.3
                                    'search_title'  'ring':4 's':2 'solomon':1 'solomons':3
                                   'search_artist'  'lucifer':1
                                  'search_release'  'black':1 'mass':2
                                     'search_rest'  '01':11 '1971':9,10 'aka':2,3 'black':7 'death':17 'eid':15 'garson':5,6 'lucifer':1 'mass':8 'metal':16 'mort':4 'ring':14 's':13 'solomon':12
                                    'search_combo'  '01':18 '1971':16,17 'aka':9,10 'black':6C,14 'death':24 'eid':22 'garson':12,13 'lucifer':5B,8 'mass':7C,15 'metal':23 'mort':11 'ring':4A,21 's':2A,20 'solomon':1A,19 'solomons':3A
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-1', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['death metal', 'hard rock', 'doom metal', 'psychedelic rock', 'occult rock']
                                        'tag_date'  1971
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620302132.2818997  (2021-05-06 13:55:32)
                             'size'  5363584