======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '162'
                                          'artist'  'Hollywood Undead'
                                     'text_people'  ''
                                         'release'  'Swan Songs'
                                           'title'  'Pain (Bonus Track)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-3', 'q-syn-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['rapcore', 'rap', 'screamo', 'alternative', 'hardcore']"
                                     'discogstags'  "['electronic', 'rock', 'alternative rock', 'hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  '18'
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'hip hop or rnb or rap or turntablism'
                                             'bpm'  '93.3'
                                             'key'  '2A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Swan Songs'
'TBPM' (BPM (beats per minute))                     '93.3'
'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism'
'TDRC' (Recording time)                             '2008-09-02'
'TIT2' (Title/songname/content description)         'Pain (Bonus Track)'
'TKEY' (Initial key)                                '2A'
'TLAN' (Language(s))                                'eng'
'TPE1' (Lead performer(s)/Soloist(s))               'Hollywood Undead'
'TPE2' (Band/orchestra/accompaniment)               'Hollywood Undead'
'TPUB' (Publisher)                                  'A&M Octane'
'TRCK' (Track number/Position in set)               '15/18'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'rock', 'alternative rock', 'hip hop']
'TXXX:lastfmtags'                                   ['rapcore', 'rap', 'screamo', 'alternative', 'hardcore']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.91 dB'
'TXXX:replaygain_track_peak'                        '0.543643'

========================== row from database ==========================
                                              'id'  1277691
                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/Hollywood Undead/Swan Songs (4 bonus tracks version)/15 Pain (Bonus Track).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  162
                                           'genre'  hip hop or rnb or rap or turntablism
                                        'filesize'  6597212
                                           'mtime'  1620584568
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock hiphop rap rnb turntablism (4 bonus tracks version) 15 hip hop or rnb or rap or turntablism
                                      'tag_artist'  Hollywood Undead
                                     'tag_release'  Swan Songs
                                       'tag_title'  Pain (Bonus Track)
                                             'bpm'  93.3
                                    'search_title'  'bonus':2,3 'pain':1 'track':4,5
                                   'search_artist'  'hollywood':1 'undead':2
                                  'search_release'  'songs':2 'swan':1
                                     'search_rest'  '4':5,6 'bonus':7 'hip':11 'hiphop':1 'hop':12 'or':13 'rap':2 'rnb':3 'tracks':8 'turntablism':4 'version':9,10
                                    'search_combo'  '4':14,15 'bonus':2A,3A,16 'hip':20 'hiphop':10 'hollywood':6B 'hop':21 'or':22 'pain':1A 'rap':11 'rnb':12 'songs':9C 'swan':8C 'track':4A,5A 'tracks':17 'turntablism':13 'undead':7B 'version':18,19
                                    'tag_tracknum'  15
                                      'num_images'  1
                                             'key'  2A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['rapcore', 'rap', 'screamo', 'alternative', 'hardcore']
                                        'tag_date'  2008
                                     'discogstags'  ['electronic', 'rock', 'alternative rock', 'hip hop']

============================== file details ==============================
                                           'mtime'  1620584567.758495  (2021-05-09 20:22:47)
                             'size'  6597212