======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '246'
                                          'artist'  'Survivor'
                                     'text_people'  ''
                                         'release'  'top100'
                                           'title'  'Eye of the tiger'
                                           'quals'  ("['Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'q-syn-3', 'q-bass-3', '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'  "['hard rock', '80s', 'rock', 'aor', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance;set-pl-zomg80s'
                                             'bpm'  '108.704'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'top100'
'TBPM' (BPM (beats per minute))                     '108.704'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-generic or radio-dance', 'set-pl-zomg80s']
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Eye of the tiger'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Survivor'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '120,189'
'TXXX:Mp3gain_undo'                                 '+003,+003,N'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:Tracknum'                                     '055'
'TXXX:lastfmtags'                                   ['hard rock', '80s', 'rock', 'aor', 'classic rock']
'TXXX:q-bass'                                       '3'
'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'                        '+1.61 dB'
'TXXX:replaygain_track_peak'                        '0.627507'

========================== row from database ==========================
                                              'id'  1406175
                                            'path'  /data/Music/Bulk/00poprockelectronic-generic-dance-trapbeat/top100/055-Survivor-Eye_of_the_tiger.mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  246
                                           'genre'  electronic-generic or radio-dance;set-pl-zomg80s
                                        'filesize'  3448606
                                           'mtime'  1620350781
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic generic dance trapbeat 055 Eye_of_the_tiger electronic generic radio dance;set pl zomg80s
                                      'tag_artist'  Survivor
                                     'tag_release'  top100
                                       'tag_title'  Eye of the tiger
                                             'bpm'  108.704
                                    'search_title'  'eye':1 'of':2 'the':3 'tiger':4
                                   'search_artist'  'survivor':1
                                  'search_release'  'top100':1
                                     'search_rest'  '00poprockelectronic':1 'dance':3,11,13 'electronic':9 'eye':5 'generic':2 'of':6 'pl':15 'radio':10 'set':12,14 'the':7 'tiger':8 'trapbeat':4 'zomg80s':16
                                    'search_combo'  '00poprockelectronic':7 'dance':9,17,19 'electronic':15 'eye':1A,11 'generic':8 'of':2A,12 'pl':21 'radio':16 'set':18,20 'survivor':5B 'the':3A,13 'tiger':4A,14 'top100':6C 'trapbeat':10 'zomg80s':22
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', '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-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['hard rock', '80s', 'rock', 'aor', 'classic rock']
                                        'tag_date'  1985
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620350781.1172132  (2021-05-07 03:26:21)
                             'size'  3448606