======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '143'
                                          'artist'  'A.O.S.'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  'History (Repeats Itself)'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'q-syn-2', 'q-bass-3', "
 "'q-busy-2', 'q-grit-2', 'q-play-2', 'Q-OLDST-2', 'q-chart-2', 'q-drums-1', "
 "'q-other-3', 'q-piano-1', 'q-vocals-3', 'Q-HHRNBTT-1', 'q-mixbeat-1']")
                                      'lastfmtags'  "['rock', 'alternative', 'female vocalists', 'reggae', 'natural born killers']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'soundtrack-video'
                                             'bpm'  '100.257'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '100.257'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-video'
'TDRC' (Recording time)                             '1995'
'TIT2' (Title/songname/content description)         'History (Repeats Itself)'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'A.O.S.'
'TSOP' (Performer sort order)                       'A.O.S.'
'TXXX:Artists'                                      'A.O.S.'
'TXXX:MP3GAIN_MINMAX'                               '000,198'
'TXXX:MP3GAIN_UNDO'                                 '+003,+003,N'
'TXXX:MusicBrainz Artist Id'                        'c59b344a-3d0c-460f-867c-6687685d4e25'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rock', 'alternative', 'female vocalists', 'reggae', 'natural born killers']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.50 dB'
'TXXX:replaygain_track_peak'                        '0.637812'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'16ea06c2-79b6-4a3d-bb5c-f0fafa89ae0a')

========================== row from database ==========================
                                              'id'  787620
                                            'path'  /data/Music/Bulk/0soundtrack/Natural Born Killers/14 a.o.s. - history (repeats itself).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  143
                                           'genre'  soundtrack-video
                                        'filesize'  2305849
                                           'mtime'  1621696541
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack Natural Born Killers 14 a.o.s. history (repeats itself) soundtrack video
                                      'tag_artist'  A.O.S.
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  History (Repeats Itself)
                                             'bpm'  100.257
                                    'search_title'  'history':1 'itself':4,5 'repeats':2,3
                                   'search_artist'  'a':1 'aos':4 'o':2 's':3
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '0soundtrack':1 'a':5 'aos':8 'born':3 'history':9 'itself':12,13 'killers':4 'natural':2 'o':6 'repeats':10,11 's':7 'soundtrack':14 'video':15
                                    'search_combo'  '0soundtrack':15 'a':6B,19 'album':11C 'aos':9B,22 'born':17 'history':1A,23 'itself':4A,5A,26,27 'killers':18 'natural':16 'non':10C 'nonalbum':12C 'o':7B,20 'repeats':2A,3A,24,25 's':8B,21 'soundtrack':28 'tracks':13C,14C 'video':29
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'alternative', 'female vocalists', 'reggae', 'natural born killers']
                                        'tag_date'  1995
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621696541.3022227  (2021-05-22 17:15:41)
                             'size'  2305849