======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '216'
                                          'artist'  'System Of A Down'
                                     'text_people'  ''
                                         'release'  'Toxicity'
                                           'title'  'Version 7-0'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['alternative metal', 'alternative', 'metal', 'nu metal', 'rock']"
                                     'discogstags'  "['rock', 'nu metal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '119.054'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Toxicity'
'TBPM' (BPM (beats per minute))                     '119.054'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         'Version 7-0'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'System Of A Down'
'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', 'nu metal']
'TXXX:lastfmtags'                                   ['alternative metal', 'alternative', 'metal', 'nu metal', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-2.61 dB'
'TXXX:replaygain_track_peak'                        '0.434334'

========================== row from database ==========================
                                              'id'  1283713
                                            'path'  /data/Music/Bulk/00poprockelectronic/System Of A Down/Toxicity/System of A Down - Version 7.0 - 12.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  216
                                           'genre'  eid-metal
                                        'filesize'  4360978
                                           'mtime'  1620301802
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic of 7.0 12 eid metal
                                      'tag_artist'  System Of A Down
                                     'tag_release'  Toxicity
                                       'tag_title'  Version 7-0
                                             'bpm'  119.054
                                    'search_title'  '0':3 '7':2 '70':4 'version':1
                                   'search_artist'  'a':3 'down':4 'of':2 'system':1
                                  'search_release'  'toxicity':1
                                     'search_rest'  '0':4 '00poprockelectronic':1 '7':3 '70':5 'eid':6 'metal':7 'of':2
                                    'search_combo'  '0':3A,13 '00poprockelectronic':10 '7':2A,12 '70':4A,14 'a':7B 'down':8B 'eid':15 'metal':16 'of':6B,11 'system':5B 'toxicity':9C 'version':1A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  5A
                                           '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-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-1', 'q-bass-4', 'q-grit-4']
                                      'lastfmtags'  ['alternative metal', 'alternative', 'metal', 'nu metal', 'rock']
                                        'tag_date'  2001
                                     'discogstags'  ['rock', 'nu metal']

============================== file details ==============================
                                           'mtime'  1620301801.962205  (2021-05-06 13:50:01)
                             'size'  4360978