======================== unified (from filesystem) ========================
                                         'bitrate'  '80.0'
                                        'duration'  '222'
                                          'artist'  'Big City Orchestra'
                                     'text_people'  ''
                                         'release'  'Greatest Hits and Test Tones'
                                           'title'  'Fiend, Master Freak'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'Q-UNU-3', 'q-syn-2', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['industrial', 'noise', 'avant garde', 'experimental', 'old school "
 "industrial']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  '1993'
                                        'comments'  ''
                                           'genre'  'electronic-experimental-oddness'
                                             'bpm'  '116.0'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Greatest Hits and Test Tones'
'TBPM' (BPM (beats per minute))                     '116.0'
'TCON' (Content type, a.k.a. Genre)                 'electronic-experimental-oddness'
'TDRC' (Recording time)                             '1993'
'TIT2' (Title/songname/content description)         'Fiend, Master Freak'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Big City Orchestra'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '3'
'TXXX:lastfmtags'                                   ['industrial', 'noise', 'avant garde', 'experimental', 'old school industrial']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.56 dB'
'TXXX:replaygain_track_peak'                        '0.913453'

========================== row from database ==========================
                                              'id'  1375345
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Big City Orchestra - 1993 - Greatest Hits And Test Tones/09. Fiend, Master Freak.mp3
                                         'working'  None
                                         'bitrate'  80
                                    'duration_sec'  222
                                           'genre'  electronic-experimental-oddness
                                        'filesize'  2615714
                                           'mtime'  1620571173
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 1993 And 09. electronic experimental oddness
                                      'tag_artist'  Big City Orchestra
                                     'tag_release'  Greatest Hits and Test Tones
                                       'tag_title'  Fiend, Master Freak
                                             'bpm'  116.0
                                    'search_title'  'fiend':1,2 'freak':4 'master':3
                                   'search_artist'  'big':1 'city':2 'orchestra':3
                                  'search_release'  'and':3 'greatest':1 'hits':2 'test':4 'tones':5
                                     'search_rest'  '09':3,4 '1993':1 'and':2 'electronic':5 'experimental':6 'oddness':7
                                    'search_combo'  '09':15,16 '1993':13 'and':10C,14 'big':5B 'city':6B 'electronic':17 'experimental':18 'fiend':1A,2A 'freak':4A 'greatest':8C 'hits':9C 'master':3A 'oddness':19 'orchestra':7B 'test':11C 'tones':12C
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-2', 'Q-HAP-2', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['industrial', 'noise', 'avant garde', 'experimental', 'old school industrial']
                                        'tag_date'  1993
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620571173.0984132  (2021-05-09 16:39:33)
                             'size'  2615714