======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '348'
                                          'artist'  'Skadi'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'My Cold Heart Within The Fires Of Doom'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['dark ambient', 'ritual ambient', 'ambient', 'tribal', 'ritual']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-drone'
                                             'bpm'  '145.1'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '145.1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-drone'
'TIT2' (Title/songname/content description)         'My Cold Heart Within The Fires Of Doom'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Skadi'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['dark ambient', 'ritual ambient', 'ambient', 'tribal', 'ritual']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-1.84 dB'
'TXXX:replaygain_track_peak'                        '0.453579'

========================== row from database ==========================
                                              'id'  1426499
                                            'path'  /data/Music/Bulk/00poprockelectronic/00drone/Skadi - My Cold Heart Within The Fires Of Doom.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  348
                                           'genre'  electronic-drone
                                        'filesize'  6977903
                                           'mtime'  1636913306
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00drone electronic drone
                                      'tag_artist'  Skadi
                                     'tag_release'  None
                                       'tag_title'  My Cold Heart Within The Fires Of Doom
                                             'bpm'  145.1
                                    'search_title'  'cold':2 'doom':8 'fires':6 'heart':3 'my':1 'of':7 'the':5 'within':4
                                   'search_artist'  'skadi':1
                                  'search_release'  
                                     'search_rest'  '00drone':2 '00poprockelectronic':1 'drone':4 'electronic':3
                                    'search_combo'  '00drone':11 '00poprockelectronic':10 'cold':2A 'doom':8A 'drone':13 'electronic':12 'fires':6A 'heart':3A 'my':1A 'of':7A 'skadi':9B 'the':5A 'within':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-4', 'q-syn-3', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['dark ambient', 'ritual ambient', 'ambient', 'tribal', 'ritual']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636913305.6339588  (2021-11-14 19:08:25)
                             'size'  6977903