======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '194'
                                          'artist'  'Eduard Jacobs'
                                     'text_people'  ''
                                         'release'  'Jumbo A-18037'
                                           'title'  'Brief Van Een Dienstmeisje Aan Haar Moeder'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                     'discogstags'  "['folk, world, & country']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1907'
                                        'comments'  ''
                                           'genre'  'loc-eur-netherlands;prerock-vocal'
                                             'bpm'  '87.5'
                                             'key'  '2B'
                                        '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)                     'Jumbo A-18037'
'TBPM' (BPM (beats per minute))                     '87.5'
'TCON' (Content type, a.k.a. Genre)                 ['loc-eur-netherlands', 'prerock-vocal']
'TDRC' (Recording time)                             '1907'
'TIT2' (Title/songname/content description)         'Brief Van Een Dienstmeisje Aan Haar Moeder'
'TKEY' (Initial key)                                '2B'
'TLEN' (Length)                                     '194000'
'TPE1' (Lead performer(s)/Soloist(s))               'Eduard Jacobs'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'folk, world, & country'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.28 dB'
'TXXX:replaygain_track_peak'                        '0.660345'

========================== row from database ==========================
                                              'id'  1459393
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1907/Eduard Jacobs - Brief Van Een Dienstmeisje Aan Haar Moeder 1907.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  194
                                           'genre'  loc-eur-netherlands;prerock-vocal
                                        'filesize'  4006762
                                           'mtime'  1621627055
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1907 1907 loc eur netherlands;prerock vocal
                                      'tag_artist'  Eduard Jacobs
                                     'tag_release'  Jumbo A-18037
                                       'tag_title'  Brief Van Een Dienstmeisje Aan Haar Moeder
                                             'bpm'  87.5
                                    'search_title'  'aan':5 'brief':1 'dienstmeisje':4 'een':3 'haar':6 'moeder':7 'van':2
                                   'search_artist'  'eduard':1 'jacobs':2
                                  'search_release'  '18037':3 'a':2 'a18037':4 'jumbo':1
                                     'search_rest'  '00oldiepop':5 '1907':6 'country':4 'eur':8 'exotica':2 'jazz':1 'loc':7 'netherlands':9,11 'oldies':3 'prerock':10,12 'vocal':13
                                    'search_combo'  '00oldiepop':18 '18037':12C '1907':19 'a':11C 'a18037':13C 'aan':5A 'brief':1A 'country':17 'dienstmeisje':4A 'eduard':8B 'een':3A 'eur':21 'exotica':15 'haar':6A 'jacobs':9B 'jazz':14 'jumbo':10C 'loc':20 'moeder':7A 'netherlands':22,24 'oldies':16 'prerock':23,25 'van':2A 'vocal':26
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  2B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', '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-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['q-vocals-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'q-bass-1', 'q-grit-1']
                                        'tag_date'  1907
                                     'discogstags'  ['folk, world, & country']

============================== file details ==============================
                                           'mtime'  1621627054.5087414  (2021-05-21 21:57:34)
                             'size'  4006762