======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '585'
                                          'artist'  'Henryk Gorecki'
                                     'text_people'  ''
                                         'release'  'David Zimmerman - London Symph'
                                           'title'  'Symphony No. 3 - II. Lento E L'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['contemporary classical', 'classical', 'minimalism', 'polish', '20th "
 "century classical']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1991'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '139.178'
                                             'key'  '3B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'David Zimmerman - London Symph'
'TBPM' (BPM (beats per minute))                     '139.178'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '1991'
'TIT2' (Title/songname/content description)         'Symphony No. 3 - II. Lento E L'
'TKEY' (Initial key)                                '3B'
'TPE1' (Lead performer(s)/Soloist(s))               'Henryk Gorecki'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['contemporary classical',
 'classical',
 'minimalism',
 'polish',
 '20th century classical']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+4.17 dB'
'TXXX:replaygain_track_peak'                        '0.980596'

========================== row from database ==========================
                                              'id'  185178
                                            'path'  /data/Music/Bulk/00instruments-classical/Gorecki/gorecki 3. senfoni/Gorecki, Henryk - 02 - Symphony No. 3 - II. Lento E Largo - Tranquillissimo.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  585
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  14044501
                                           'mtime'  1620561577
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical gorecki 3. senfoni Gorecki, 02 Largo Tranquillissimo prerock classical classical instruments
                                      'tag_artist'  Henryk Gorecki
                                     'tag_release'  David Zimmerman - London Symph
                                       'tag_title'  Symphony No. 3 - II. Lento E L
                                             'bpm'  139.178
                                    'search_title'  '3':4 'e':8 'ii':5,6 'l':9 'lento':7 'no':2,3 'symphony':1
                                   'search_artist'  'gorecki':2 'henryk':1
                                  'search_release'  'david':1 'london':3 'symph':4 'zimmerman':2
                                     'search_rest'  '00instruments':1 '3':4,5 'classical':2 'gorecki':3,7 'instruments':11 'largo':8 'prerock':10 'senfoni':6 'tranquillissimo':9
                                    'search_combo'  '00instruments':16 '3':4A,19,20 'classical':17 'david':12C 'e':8A 'gorecki':11B,18,22 'henryk':10B 'ii':5A,6A 'instruments':26 'l':9A 'largo':23 'lento':7A 'london':14C 'no':2A,3A 'prerock':25 'senfoni':21 'symph':15C 'symphony':1A 'tranquillissimo':24 'zimmerman':13C
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  3B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['contemporary classical', 'classical', 'minimalism', 'polish', '20th century classical']
                                        'tag_date'  1991
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561576.662798  (2021-05-09 13:59:36)
                             'size'  14044501