======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '147'
                                          'artist'  'Slipknot'
                                     'text_people'  ''
                                         'release'  'Slipknot'
                                           'title'  'Wait and Bleed'
                                           'quals'  ("['Q-UNU-2', 'Q-JZFKS-1', 'Q-HAP-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-4', 'q-play-2', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock', 'metal', 'nu metal', 'heavy metal']"
                                     'discogstags'  "['rock', 'nu metal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '00'
                                      'tracktotal'  ''
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'eid-metal'
                                             'bpm'  '124.852'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'COMM:ID3v1 Comment:XXX'                            'None'
'COMM:MusicMatch_Mood:eng'                          'None'
'COMM:MusicMatch_Preference:eng'                    'None'
'COMM:MusicMatch_Situation:eng'                     'None'
'COMM:MusicMatch_Tempo:eng'                         'None'
'PCNT' (Play counter)                               PCNT(count=0)
'TALB' (Album/Movie/Show title)                     'Slipknot'
'TBPM' (BPM (beats per minute))                     '124.852'
'TCON' (Content type, a.k.a. Genre)                 'eid-metal'
'TDRC' (Recording time)                             '1999'
'TIT2' (Title/songname/content description)         'Wait and Bleed'
'TKEY' (Initial key)                                '10A'
'TLEN' (Length)                                     '0'
'TPE1' (Lead performer(s)/Soloist(s))               'Slipknot'
'TRCK' (Track number/Position in set)               '00'
'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'                                   ['rock', 'metal', 'nu metal', 'heavy metal']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '4'
'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'                        '-1.04 dB'
'TXXX:replaygain_track_peak'                        '0.434145'

========================== row from database ==========================
                                              'id'  1338166
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/Slipknot - Wait And Bleed.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  147
                                           'genre'  eid-metal
                                        'filesize'  2367360
                                           'mtime'  1620301844
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] And eid metal
                                      'tag_artist'  Slipknot
                                     'tag_release'  Slipknot
                                       'tag_title'  Wait and Bleed
                                             'bpm'  124.852
                                    'search_title'  'and':2 'bleed':3 'wait':1
                                   'search_artist'  'slipknot':1
                                  'search_release'  'slipknot':1
                                     'search_rest'  '00poprockelectronic':1 'and':7 'eid':8 'files':5,6 'loose':3,4 'metal':9 'unsorted':2
                                    'search_combo'  '00poprockelectronic':6 'and':2A,12 'bleed':3A 'eid':13 'files':10,11 'loose':8,9 'metal':14 'slipknot':4B,5C 'unsorted':7 'wait':1A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10A
                                           '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-2', 'q-other-3', 'Q-HAP-1', 'q-bass-3', 'q-grit-4']
                                      'lastfmtags'  ['rock', 'metal', 'nu metal', 'heavy metal']
                                        'tag_date'  1999
                                     'discogstags'  ['rock', 'nu metal']

============================== file details ==============================
                                           'mtime'  1620301843.9598014  (2021-05-06 13:50:43)
                             'size'  2367360