======================== unified (from filesystem) ========================
                                         'bitrate'  '263.787'
                                        'duration'  '236'
                                          'artist'  'Electric Light Orchestra'
                                     'text_people'  ''
                                         'release'  'Eldorado'
                                           'title'  "Nobody's Child"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'Q-PLAY-3', 'q-syn-2', 'q-bass-4', 'q-busy-2', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-3', 'q-other-2', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['rock', 'progressive rock', 'british', '70s', 'classic rock']"
                                     'discogstags'  "['rock', 'symphonic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '07'
                                      'tracktotal'  '12'
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'rock-cppex-classic'
                                             'bpm'  '85.381'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Eldorado'
'TBPM' (BPM (beats per minute))                     '85.381'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-classic'
'TDRC' (Recording time)                             '2001'
'TIT2' (Title/songname/content description)         "Nobody's Child"
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Electric Light Orchestra'
'TPE2' (Band/orchestra/accompaniment)               'Electric Light Orchestra'
'TPOS' (Part of a set)                              '4/12'
'TRCK' (Track number/Position in set)               '07/12'
'TXXX:Description'                                  'The Classic Albums Collection'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'symphonic rock']
'TXXX:lastfmtags'                                   ['rock', 'progressive rock', 'british', '70s', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.20 dB'
'TXXX:replaygain_track_peak'                        '0.507028'

========================== row from database ==========================
                                              'id'  1498757
                                            'path'  /data/Music/Bulk/00poprockelectronic-poprock-indierock/Electric Light Orchestra - Eldorado/07. Nobody_s Child.mp3
                                         'working'  None
                                         'bitrate'  263
                                    'duration_sec'  236
                                           'genre'  rock-cppex-classic
                                        'filesize'  7804064
                                           'mtime'  1636039017
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic poprock indierock 07. Nobody_s rock cppex classic
                                      'tag_artist'  Electric Light Orchestra
                                     'tag_release'  Eldorado
                                       'tag_title'  Nobody's Child
                                             'bpm'  85.381
                                    'search_title'  'child':4 'nobody':1 'nobodys':3 's':2
                                   'search_artist'  'electric':1 'light':2 'orchestra':3
                                  'search_release'  'eldorado':1
                                     'search_rest'  '00poprockelectronic':1 '07':4,5 'classic':10 'cppex':9 'indierock':3 'nobody':6 'poprock':2 'rock':8 's':7
                                    'search_combo'  '00poprockelectronic':9 '07':12,13 'child':4A 'classic':18 'cppex':17 'eldorado':8C 'electric':5B 'indierock':11 'light':6B 'nobody':1A,14 'nobodys':3A 'orchestra':7B 'poprock':10 'rock':16 's':2A,15
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rock', 'progressive rock', 'british', '70s', 'classic rock']
                                        'tag_date'  2001
                                     'discogstags'  ['rock', 'symphonic rock']

============================== file details ==============================
                                           'mtime'  1636039017.13976  (2021-11-04 16:16:57)
                             'size'  7804064