======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '252'
                                          'artist'  'Tha Dogg Pound'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  'What Would U Do?'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-4', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['g funk', 'west coast rap', 'hip hop', 'rap', 'gangsta rap']"
                                     'discogstags'  "['hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1995'
                                        'comments'  ''
                                           'genre'  'soundtrack-video'
                                             'bpm'  '106.252'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '106.252'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-video'
'TDRC' (Recording time)                             '1995'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['producer', 'Trent Reznor']])
'TIT2' (Title/songname/content description)         'What Would U Do?'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Tha Dogg Pound'
'TSOP' (Performer sort order)                       'Dogg Pound, Tha'
'TXXX:MP3GAIN_MINMAX'                               '000,194'
'TXXX:MP3GAIN_UNDO'                                 '+005,+005,N'
'TXXX:MusicBrainz Artist Id'                        '6786ab5e-0d99-4aa6-8aad-9b5f42965ddb'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '4'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'hip hop'
'TXXX:lastfmtags'                                   ['g funk', 'west coast rap', 'hip hop', 'rap', 'gangsta rap']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.59 dB'
'TXXX:replaygain_track_peak'                        '0.501218'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'f566b6bd-0dc6-47b8-9d82-e257a7e721c5')

========================== row from database ==========================
                                              'id'  791903
                                            'path'  /data/Music/Bulk/0soundtrack/Natural Born Killers/27 tha dogg pound - what would you do.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  252
                                           'genre'  soundtrack-video
                                        'filesize'  4038707
                                           'mtime'  1621695566
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack Natural Born Killers 27 tha dogg pound what would you do soundtrack video
                                      'tag_artist'  Tha Dogg Pound
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  What Would U Do?
                                             'bpm'  106.252
                                    'search_title'  'do':4 'u':3 'what':1 'would':2
                                   'search_artist'  'dogg':2 'pound':3 'tha':1
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '0soundtrack':1 '27':5 'born':3 'do':12 'dogg':7 'killers':4 'natural':2 'pound':8 'soundtrack':13 'tha':6 'video':14 'what':9 'would':10 'you':11
                                    'search_combo'  '0soundtrack':13 '27':17 'album':9C 'born':15 'do':4A,24 'dogg':6B,19 'killers':16 'natural':14 'non':8C 'nonalbum':10C 'pound':7B,20 'soundtrack':25 'tha':5B,18 'tracks':11C,12C 'u':3A 'video':26 'what':1A,21 'would':2A,22 'you':23
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-4', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['g funk', 'west coast rap', 'hip hop', 'rap', 'gangsta rap']
                                        'tag_date'  1995
                                     'discogstags'  ['hip hop']

============================== file details ==============================
                                           'mtime'  1621695565.5522592  (2021-05-22 16:59:25)
                             'size'  4038707