======================== unified (from filesystem) ========================
                                         'bitrate'  '171.352'
                                        'duration'  '106'
                                          'artist'  'The Meantraitors'
                                     'text_people'  ''
                                         'release'  'Grim Rock (Ep)'
                                           'title'  'Knock Out'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['russian', 'psychobilly', 'punk', 'rockabilly']"
                                     'discogstags'  "['psychobilly', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1994'
                                        'comments'  ''
                                           'genre'  'rock-rockabilly or psychobilly'
                                             'bpm'  '104.229'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Grim Rock (Ep)'
'TBPM' (BPM (beats per minute))                     '104.229'
'TCON' (Content type, a.k.a. Genre)                 'rock-rockabilly or psychobilly'
'TDRC' (Recording time)                             '1994'
'TIT2' (Title/songname/content description)         'Knock Out'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Meantraitors'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['psychobilly', 'rock']
'TXXX:lastfmtags'                                   ['russian', 'psychobilly', 'punk', 'rockabilly']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.70 dB'
'TXXX:replaygain_track_peak'                        '0.877523'

========================== row from database ==========================
                                              'id'  1343791
                                            'path'  /data/Music/Bulk/00poprockelectronic/musica/Meantraitors/1994 - grim rock (ep)/02 - Knock Out.mp3
                                         'working'  None
                                         'bitrate'  171
                                    'duration_sec'  106
                                           'genre'  rock-rockabilly or psychobilly
                                        'filesize'  2279307
                                           'mtime'  1620526564
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic musica 1994 grim rock (ep) 02 rock rockabilly psychobilly
                                      'tag_artist'  The Meantraitors
                                     'tag_release'  Grim Rock (Ep)
                                       'tag_title'  Knock Out
                                             'bpm'  104.229
                                    'search_title'  'knock':1 'out':2
                                   'search_artist'  'meantraitors':2 'the':1
                                  'search_release'  'ep':3,4 'grim':1 'rock':2
                                     'search_rest'  '00poprockelectronic':1 '1994':3 'ep':6,7 'grim':4 'musica':2 'psychobilly':9 'rock':5 'rockabilly':8
                                    'search_combo'  '00poprockelectronic':9 '1994':11 'ep':7C,8C,14,15 'grim':5C,12 'knock':1A 'meantraitors':4B 'musica':10 'out':2A 'psychobilly':17 'rock':6C,13 'rockabilly':16 'the':3B
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['russian', 'psychobilly', 'punk', 'rockabilly']
                                        'tag_date'  1994
                                     'discogstags'  ['psychobilly', 'rock']

============================== file details ==============================
                                           'mtime'  1620526563.766749  (2021-05-09 04:16:03)
                             'size'  2279307