======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '237'
                                          'artist'  'Bluf'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Liefs uit Londen'
                                           'quals'  ("['Q-JZFKS-1', 'Q-UNU-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'q-play-2', 'Q-OLDST-3', 'Q-PIANO-3', 'q-chart-3', 'q-drums-1', 'q-other-2', "
 "'q-vocals-4', 'Q-HHRNBTT-1', 'q-mixbeat-2', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['dutch', 'pop', 'nederlandstalig', 'rock', 'nederpop']"
                                     'discogstags'  "['folk, world, & country', 'pop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1998'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-unsorted'
                                             'bpm'  '106.196'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:9\x07\x00\x00'                   PRIV(owner='AverageLevel', data=b'9\x07\x00\x00')
'PRIV:PeakValue:åM\x00\x00'                         PRIV(owner='PeakValue', data=b'\xe5M\x00\x00')
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TBPM' (BPM (beats per minute))                     '106.196'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-unsorted'
'TDRC' (Recording time)                             '1998'
'TIT2' (Title/songname/content description)         'Liefs uit Londen'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bluf'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-PIANO'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['folk, world, & country', 'pop']
'TXXX:lastfmtags'                                   ['dutch', 'pop', 'nederlandstalig', 'rock', 'nederpop']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+22.04 dB'
'TXXX:replaygain_track_peak'                        '0.076074'

========================== row from database ==========================
                                              'id'  1321312
                                            'path'  /data/Music/Bulk/00poprockelectronic/90s/090 - Blof - Liefs uit london.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  237
                                           'genre'  electronic-generic or radio-unsorted
                                        'filesize'  3805258
                                           'mtime'  1620566574
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 90s 090 Blof london electronic generic or radio unsorted
                                      'tag_artist'  Bluf
                                     'tag_release'  None
                                       'tag_title'  Liefs uit Londen
                                             'bpm'  106.196
                                    'search_title'  'liefs':1 'londen':3 'uit':2
                                   'search_artist'  'bluf':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '90s':2 'blof':3 'electronic':5 'generic':6 'london':4 'or':7 'radio':8 'unsorted':9
                                    'search_combo'  '00poprockelectronic':5 '90s':6 'blof':7 'bluf':4B 'electronic':9 'generic':10 'liefs':1A 'londen':3A 'london':8 'or':11 'radio':12 'uit':2A 'unsorted':13
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['dutch', 'pop', 'nederlandstalig', 'rock', 'nederpop']
                                        'tag_date'  1998
                                     'discogstags'  ['folk, world, & country', 'pop']

============================== file details ==============================
                                           'mtime'  1620566574.2929325  (2021-05-09 15:22:54)
                             'size'  3805258