======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '187'
                                          'artist'  'Benjamino Gigli'
                                     'text_people'  ''
                                         'release'  'Electrola DA 1374'
                                           'title'  'Solo Per Te Lucia'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['tenor', 'klassik']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1934'
                                        'comments'  ''
                                           'genre'  'prerock-vocal-opera'
                                             'bpm'  '138.6'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Electrola DA 1374'
'TBPM' (BPM (beats per minute))                     '138.6'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal-opera'
'TDRC' (Recording time)                             '1934'
'TIT2' (Title/songname/content description)         'Solo Per Te Lucia'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Benjamino Gigli'
'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'                                   ['tenor', 'klassik']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.85 dB'
'TXXX:replaygain_track_peak'                        '0.551466'

========================== row from database ==========================
                                              'id'  1459360
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1934/Benjamino Gigli - Solo Per Te Lucia 1934.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  187
                                           'genre'  prerock-vocal-opera
                                        'filesize'  3826809
                                           'mtime'  1621625716
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1934 1934 prerock vocal opera
                                      'tag_artist'  Benjamino Gigli
                                     'tag_release'  Electrola DA 1374
                                       'tag_title'  Solo Per Te Lucia
                                             'bpm'  138.6
                                    'search_title'  'lucia':4 'per':2 'solo':1 'te':3
                                   'search_artist'  'benjamino':1 'gigli':2
                                  'search_release'  '1374':3 'da':2 'electrola':1
                                     'search_rest'  '00oldiepop':5 '1934':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'opera':9 'prerock':7 'vocal':8
                                    'search_combo'  '00oldiepop':14 '1374':9C '1934':15 'benjamino':5B 'country':13 'da':8C 'electrola':7C 'exotica':11 'gigli':6B 'jazz':10 'lucia':4A 'oldies':12 'opera':18 'per':2A 'prerock':16 'solo':1A 'te':3A 'vocal':17
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['tenor', 'klassik']
                                        'tag_date'  1934
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621625716.4551718  (2021-05-21 21:35:16)
                             'size'  3826809