======================== unified (from filesystem) ========================
                                         'bitrate'  '233.053'
                                        'duration'  '279'
                                          'artist'  'Warmen'
                                     'text_people'  ''
                                         'release'  'Accept the Fact'
                                           'title'  'Invisible Power'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-4', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  ("['power metal', 'neo classical metal', 'finnish', 'metal', 'instrumental', "
 "'progressive metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'eid-metal-power'
                                             'bpm'  '100.455'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Accept the Fact'
'TBPM' (BPM (beats per minute))                     '100.455'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal-power'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'Invisible Power'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Warmen'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '1'
'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'                                   ['power metal',
 'neo classical metal',
 'finnish',
 'metal',
 'instrumental',
 'progressive metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-2.80 dB'
'TXXX:replaygain_track_peak'                        '0.389306'

========================== row from database ==========================
                                              'id'  1400916
                                            'path'  /data/Music/Bulk/00dwimp/00metal/Warmen/02 Invisible Power.mp3
                                         'working'  None
                                         'bitrate'  233
                                    'duration_sec'  279
                                           'genre'  eid-metal-power
                                        'filesize'  8135297
                                           'mtime'  1620310855
                                   'redo_metaread'  0
                                        'rest_str'   00dwimp 00metal 02 eid metal power
                                      'tag_artist'  Warmen
                                     'tag_release'  Accept the Fact
                                       'tag_title'  Invisible Power
                                             'bpm'  100.455
                                    'search_title'  'invisible':1 'power':2
                                   'search_artist'  'warmen':1
                                  'search_release'  'accept':1 'fact':3 'the':2
                                     'search_rest'  '00dwimp':1 '00metal':2 'eid':3 'metal':4 'power':5
                                    'search_combo'  '00dwimp':7 '00metal':8 'accept':4C 'eid':9 'fact':6C 'invisible':1A 'metal':10 'power':2A,11 'the':5C 'warmen':3B
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['power metal', 'neo classical metal', 'finnish', 'metal', 'instrumental', 'progressive metal']
                                        'tag_date'  2005
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620310855.3610075  (2021-05-06 16:20:55)
                             'size'  8135297