======================== unified (from filesystem) ========================
                                         'bitrate'  '202.679'
                                        'duration'  '447'
                                          'artist'  'Parabellum'
                                     'text_people'  ''
                                         'release'  'Post mortem - live'
                                           'title'  'Cayenne'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-JZFKS-1', 'Q-OLDST-3', "
 "'Q-LOCALNESS-3', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-2', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['death metal', 'punk rock', 'black metal', 'punk', 'french']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'rock-gr-punk'
                                             'bpm'  '84.210'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Post mortem - live'
'TBPM' (BPM (beats per minute))                     '84.210'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-punk'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'Cayenne'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Parabellum'
'TRCK' (Track number/Position in set)               '16'
'TXXX:Fmps_playcount'                               '1'
'TXXX:Fmps_rating'                                  '0.6'
'TXXX:Fmps_rating_amarok_score'                     '0.125'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['death metal', 'punk rock', 'black metal', 'punk', 'french']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.15 dB'
'TXXX:replaygain_track_peak'                        '0.482564'

========================== row from database ==========================
                                              'id'  1416950
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/Parabellum/16 - Parabellum - Cayenne.mp3
                                         'working'  None
                                         'bitrate'  202
                                    'duration_sec'  447
                                           'genre'  rock-gr-punk
                                        'filesize'  11338973
                                           'mtime'  1621629994
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner 16 rock gr punk
                                      'tag_artist'  Parabellum
                                     'tag_release'  Post mortem - live
                                       'tag_title'  Cayenne
                                             'bpm'  84.21
                                    'search_title'  'cayenne':1
                                   'search_artist'  'parabellum':1
                                  'search_release'  'live':3 'mortem':2 'post':1
                                     'search_rest'  'garage':2 'gr':6 'punk':1 'rock':5 'stoner':4 'surf':3
                                    'search_combo'  'cayenne':1A 'garage':7 'gr':11 'live':5C 'mortem':4C 'parabellum':2B 'post':3C 'punk':6 'rock':10 'stoner':9 'surf':8
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', '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-3', 'q-bass-3', 'q-grit-3']
                                      'lastfmtags'  ['death metal', 'punk rock', 'black metal', 'punk', 'french']
                                        'tag_date'  1997
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1621629993.5588107  (2021-05-21 22:46:33)
                             'size'  11338973