======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '193'
                                          'artist'  'Green Day'
                                     'text_people'  ''
                                         'release'  'Nimrod'
                                           'title'  'King for a Day'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-3', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['punk rock', 'pop punk', 'punk', 'alternative', 'rock']"
                                     'discogstags'  "['alternative rock', 'pop punk', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'rock-gr-punk'
                                             'bpm'  '145.685'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Nimrod'
'TBPM' (BPM (beats per minute))                     '145.685'
'TCON' (Content type, a.k.a. Genre)                 'rock-gr-punk'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'King for a Day'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Green Day'
'TRCK' (Track number/Position in set)               '16'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['alternative rock', 'pop punk', 'rock']
'TXXX:lastfmtags'                                   ['punk rock', 'pop punk', 'punk', 'alternative', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'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'                        '-1.76 dB'
'TXXX:replaygain_track_peak'                        '0.387454'

========================== row from database ==========================
                                              'id'  1420778
                                            'path'  /data/Music/Bulk/00popandrock-punk-garage-surf-stoner/Green Day/(1997) Nimrod/16 Nimrod - Green Day - King for a day.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  193
                                           'genre'  rock-gr-punk
                                        'filesize'  4646420
                                           'mtime'  1622658991
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock punk garage surf stoner (1997) 16 day rock gr punk
                                      'tag_artist'  Green Day
                                     'tag_release'  Nimrod
                                       'tag_title'  King for a Day
                                             'bpm'  145.685
                                    'search_title'  'a':3 'day':4 'for':2 'king':1
                                   'search_artist'  'day':2 'green':1
                                  'search_release'  'nimrod':1
                                     'search_rest'  '1997':5,6 'day':7 'garage':2 'gr':9 'punk':1 'rock':8 'stoner':4 'surf':3
                                    'search_combo'  '1997':12,13 'a':3A 'day':4A,6B,14 'for':2A 'garage':9 'gr':16 'green':5B 'king':1A 'nimrod':7C 'punk':8 'rock':15 'stoner':11 'surf':10
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-3']
                                      'lastfmtags'  ['punk rock', 'pop punk', 'punk', 'alternative', 'rock']
                                        'tag_date'  1997
                                     'discogstags'  ['alternative rock', 'pop punk', 'rock']

============================== file details ==============================
                                           'mtime'  1622658990.889829  (2021-06-02 20:36:30)
                             'size'  4646420