======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '248'
                                          'artist'  "Charles d'Almaine"
                                     'text_people'  ''
                                         'release'  'Edison Blue Amberol  2263'
                                           'title'  "Peg O' My Heart"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1913'
                                        'comments'  ''
                                           'genre'  'prerock-instrumental;mi-strings-violin'
                                             'bpm'  '138.5'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'COMM:MusicMatch_Tempo:eng'                         'None'
'TALB' (Album/Movie/Show title)                     'Edison Blue Amberol  2263'
'TBPM' (BPM (beats per minute))                     '138.5'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-instrumental', 'mi-strings-violin']
'TDRC' (Recording time)                             '1913'
'TIT2' (Title/songname/content description)         "Peg O' My Heart"
'TKEY' (Initial key)                                '9A'
'TLEN' (Length)                                     '248000'
'TPE1' (Lead performer(s)/Soloist(s))               "Charles d'Almaine"
'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:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.49 dB'
'TXXX:replaygain_track_peak'                        '0.699733'

========================== row from database ==========================
                                              'id'  1504543
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1913/Charles D_ Almaine violin - Peg O_ My Heart 1913.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  248
                                           'genre'  prerock-instrumental;mi-strings-violin
                                        'filesize'  5062991
                                           'mtime'  1620528045
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1913 D_ violin O_ 1913 prerock instrumental;mi strings violin
                                      'tag_artist'  Charles d'Almaine
                                     'tag_release'  Edison Blue Amberol  2263
                                       'tag_title'  Peg O' My Heart
                                             'bpm'  138.5
                                    'search_title'  'heart':5 'my':4 'o':2,3 'peg':1
                                   'search_artist'  'almaine':3 'charles':1 'd':2 'dalmaine':4
                                  'search_release'  '2263':4 'amberol':3 'blue':2 'edison':1
                                     'search_rest'  '00oldiepop':5 '1913':6 'country':4 'd':7 'exotica':2 'instrumental':11,13 'jazz':1 'mi':12,14 'o':9 'oldies':3 'prerock':10 'strings':15 'violin':8
                                    'search_combo'  '00oldiepop':18 '1913':19 '2263':13C 'almaine':8B 'amberol':12C 'blue':11C 'charles':6B 'country':17 'd':7B,20 'dalmaine':9B 'edison':10C 'exotica':15 'heart':5A 'instrumental':24,26 'jazz':14 'mi':25,27 'my':4A 'o':2A,3A,22 'oldies':16 'peg':1A 'prerock':23 'strings':28 'violin':21
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  9A
                                           '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-2', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1913
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528045.4350615  (2021-05-09 04:40:45)
                             'size'  5062991