======================== unified (from filesystem) ========================
                                         'bitrate'  '160.643'
                                        'duration'  '298'
                                          'artist'  'Sting'
                                     'text_people'  ''
                                         'release'  'Nothing Like the Sun'
                                           'title'  'History Will Teach Us Nothing'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-3', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['classic rock', 'singer songwriter', 'british', 'pop', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1987'
                                        'comments'  ''
                                           'genre'  'rock-pop'
                                             'bpm'  '88.2'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Nothing Like the Sun'
'TBPM' (BPM (beats per minute))                     '88.2'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop'
'TDRC' (Recording time)                             '1987'
'TIT2' (Title/songname/content description)         'History Will Teach Us Nothing'
'TKEY' (Initial key)                                '11B'
'TPE1' (Lead performer(s)/Soloist(s))               'Sting'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['classic rock', 'singer songwriter', 'british', 'pop', 'rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.83 dB'
'TXXX:replaygain_track_peak'                        '0.848933'

========================== row from database ==========================
                                              'id'  1316544
                                            'path'  /data/Music/Bulk/00poprockelectronic/1987 - Nothing Like The Sun/04 - History Will Teach Us Nothing.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  298
                                           'genre'  rock-pop
                                        'filesize'  6006637
                                           'mtime'  1636917936
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 1987 The 04 rock pop
                                      'tag_artist'  Sting
                                     'tag_release'  Nothing Like the Sun
                                       'tag_title'  History Will Teach Us Nothing
                                             'bpm'  88.2
                                    'search_title'  'history':1 'nothing':5 'teach':3 'us':4 'will':2
                                   'search_artist'  'sting':1
                                  'search_release'  'like':2 'nothing':1 'sun':4 'the':3
                                     'search_rest'  '00poprockelectronic':1 '1987':2 'pop':5 'rock':4 'the':3
                                    'search_combo'  '00poprockelectronic':11 '1987':12 'history':1A 'like':8C 'nothing':5A,7C 'pop':15 'rock':14 'sting':6B 'sun':10C 'teach':3A 'the':9C,13 'us':4A 'will':2A
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['classic rock', 'singer songwriter', 'british', 'pop', 'rock']
                                        'tag_date'  1987
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636917936.118775  (2021-11-14 20:25:36)
                             'size'  6006637