======================== unified (from filesystem) ========================
                                         'bitrate'  '178.538'
                                        'duration'  '233'
                                          'artist'  'DJ Shog'
                                     'text_people'  ''
                                         'release'  'The Ultimate DJ Top 100 (disc 5)'
                                           'title'  'Another World'
                                           'quals'  ("['Q-HAP-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', "
 "'Q-OLDST-3', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-3']")
                                      'lastfmtags'  "['dance', 'trance', 'techno', 'electronic', 'vocal trance']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '138.040'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Ultimate DJ Top 100 (disc 5)'
'TBPM' (BPM (beats per minute))                     '138.040'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TIT2' (Title/songname/content description)         'Another World'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'DJ Shog'
'TRCK' (Track number/Position in set)               '9'
'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'                                  'electronic'
'TXXX:lastfmtags'                                   ['dance', 'trance', 'techno', 'electronic', 'vocal trance']
'TXXX:q-bass'                                       '4'
'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'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.91 dB'
'TXXX:replaygain_track_peak'                        '0.381308'

========================== row from database ==========================
                                              'id'  1297433
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/DJ Shog - The Ultimate DJ Top 100 (disc 5) - 09 - Another World.mp3
                                         'working'  None
                                         'bitrate'  178
                                    'duration_sec'  233
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  5220827
                                           'mtime'  1621696759
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 09 electronic generic radio dance
                                      'tag_artist'  DJ Shog
                                     'tag_release'  The Ultimate DJ Top 100 (disc 5)
                                       'tag_title'  Another World
                                             'bpm'  138.04
                                    'search_title'  'another':1 'world':2
                                   'search_artist'  'dj':1 'shog':2
                                  'search_release'  '100':5 '5':8,9 'disc':6,7 'dj':3 'the':1 'top':4 'ultimate':2
                                     'search_rest'  '00poprockelectronic':1 'dance':10 'electronic':7 'files':5,6 'generic':8 'loose':3,4 'radio':9 'unsorted':2
                                    'search_combo'  '00poprockelectronic':14 '100':9C '5':12C,13C 'another':1A 'dance':23 'disc':10C,11C 'dj':3B,7C 'electronic':20 'files':18,19 'generic':21 'loose':16,17 'radio':22 'shog':4B 'the':5C 'top':8C 'ultimate':6C 'unsorted':15 'world':2A
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'trance', 'techno', 'electronic', 'vocal trance']
                                        'tag_date'  
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1621696758.6127539  (2021-05-22 17:19:18)
                             'size'  5220827