======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '158'
                                          'artist'  'Elmore James'
                                     'text_people'  ''
                                         'release'  'King Of The Slide Guitar - Disc 1'
                                           'title'  'knocking At Your Door'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-3', 'Q-LOCALNESS-3', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'classic blues', 'chicago blues', 'jazz', 'delta blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1982'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '116.992'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'King Of The Slide Guitar - Disc 1'
'TBPM' (BPM (beats per minute))                     '116.992'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDRC' (Recording time)                             '1982'
'TIT2' (Title/songname/content description)         'knocking At Your Door'
'TKEY' (Initial key)                                '8B'
'TMED' (Media type)                                 'DIG'
'TPE1' (Lead performer(s)/Soloist(s))               'Elmore James'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['blues', 'classic blues', 'chicago blues', 'jazz', 'delta blues']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+12.92 dB'
'TXXX:replaygain_track_peak'                        '0.121584'

========================== row from database ==========================
                                              'id'  1338939
                                            'path'  /data/Music/Bulk/00poprockelectronic/2017-01-01 Best Of Dezember 2016/Elmore James - Knocking At Your Door.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  158
                                           'genre'  prerock-jb-blues
                                        'filesize'  5078912
                                           'mtime'  1620403746
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 2017 01 01 Best Dezember 2016 Knocking prerock jb blues
                                      'tag_artist'  Elmore James
                                     'tag_release'  King Of The Slide Guitar - Disc 1
                                       'tag_title'  knocking At Your Door
                                             'bpm'  116.992
                                    'search_title'  'at':2 'door':4 'knocking':1 'your':3
                                   'search_artist'  'elmore':1 'james':2
                                  'search_release'  '1':7 'disc':6 'guitar':5 'king':1 'of':2 'slide':4 'the':3
                                     'search_rest'  '00poprockelectronic':1 '2016':5 '2017':2 'best':3 'blues':9 'dezember':4 'jb':8 'knocking':6 'prerock':7
                                    'search_combo'  '00poprockelectronic':14 '1':13C '2016':18 '2017':15 'at':2A 'best':16 'blues':22 'dezember':17 'disc':12C 'door':4A 'elmore':5B 'guitar':11C 'james':6B 'jb':21 'king':7C 'knocking':1A,19 'of':8C 'prerock':20 'slide':10C 'the':9C 'your':3A
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-2', 'q-other-4', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'classic blues', 'chicago blues', 'jazz', 'delta blues']
                                        'tag_date'  1982
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620403745.6598275  (2021-05-07 18:09:05)
                             'size'  5078912