======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '202'
                                          'artist'  'Coal Chamber'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  'Something Told Me'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative metal', 'industrial', 'metal', 'nu metal']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'soundtrack-video'
                                             'bpm'  '113.136'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '113.136'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-video'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'Something Told Me'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Coal Chamber'
'TSOP' (Performer sort order)                       'Coal Chamber'
'TXXX:MP3GAIN_MINMAX'                               '090,204'
'TXXX:MP3GAIN_UNDO'                                 '+006,+006,N'
'TXXX:MusicBrainz Artist Id'                        'f3430779-bbec-437b-944d-1fbf45d2e786'
'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'                                   ['alternative metal', 'industrial', 'metal', 'nu metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'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'                        '-1.51 dB'
'TXXX:replaygain_track_peak'                        '0.423763'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'd4195fcf-e238-4c30-b5d5-ec194cf71881')

========================== row from database ==========================
                                              'id'  782430
                                            'path'  /data/Music/Bulk/0soundtrack/Resident Evil OST/04-Coal Chamber - Something Told Me.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  202
                                           'genre'  soundtrack-video
                                        'filesize'  4859578
                                           'mtime'  1620334200
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack Resident Evil OST 04 soundtrack video
                                      'tag_artist'  Coal Chamber
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  Something Told Me
                                             'bpm'  113.136
                                    'search_title'  'me':3 'something':1 'told':2
                                   'search_artist'  'chamber':2 'coal':1
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '0soundtrack':1 'evil':3 'ost':4 'resident':2 'soundtrack':5 'video':6
                                    'search_combo'  '0soundtrack':11 'album':7C 'chamber':5B 'coal':4B 'evil':13 'me':3A 'non':6C 'nonalbum':8C 'ost':14 'resident':12 'something':1A 'soundtrack':15 'told':2A 'tracks':9C,10C 'video':16
                                    '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-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['alternative metal', 'industrial', 'metal', 'nu metal']
                                        'tag_date'  2000
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620334200.413469  (2021-05-06 22:50:00)
                             'size'  4859578