======================== unified (from filesystem) ========================
                                         'bitrate'  '121.146'
                                        'duration'  '199'
                                          'artist'  'Placido Domingo'
                                     'text_people'  'J.A. Caruso'
                                         'release'  'french tanguerooo'
                                           'title'  'Alma De Bohemio'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', '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'  "['opera', 'classical', 'tenor', 'spanish', 'male vocalists']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '2001'
                                        'comments'  ''
                                           'genre'  'loc-style-tango or milonga'
                                             'bpm'  '123.859'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

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'PRIV:WM/Provider:A\x00M\x00G\x00\x00\x00'          PRIV(owner='WM/Provider', data=b'A\x00M\x00G\x00\x00\x00')
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'PRIV:WM/WMCollectionGroupID:\x10&\x16-\x972sF²z°å\x8aGfµ'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x10&\x16-\x972sF\xb2z\xb0\xe5\x8aGf\xb5')
'PRIV:WM/WMCollectionID:\x10&\x16-\x972sF²z°å\x8aGfµ'  PRIV(owner='WM/WMCollectionID', data=b'\x10&\x16-\x972sF\xb2z\xb0\xe5\x8aGf\xb5')
'PRIV:WM/WMContentID:ÖmäË\\Ó¨B\x83Ò6%Kmf\x92'       PRIV(owner='WM/WMContentID', data=b'\xd6m\xe4\xcb\\\xd3\xa8B\x83\xd26%Kmf\x92')
'TALB' (Album/Movie/Show title)                     'french tanguerooo'
'TBPM' (BPM (beats per minute))                     '123.859'
'TCOM' (Composer)                                   'J.A. Caruso'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-tango or milonga'
'TDRC' (Recording time)                             '2001'
'TENC' (Encoded by)                                 'FrenchTanguero'
'TIT2' (Title/songname/content description)         'Alma De Bohemio'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Placido Domingo'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Decca'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['opera', 'classical', 'tenor', 'spanish', 'male vocalists']
'TXXX:q-bass'                                       '4'
'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'                        '-0.22 dB'
'TXXX:replaygain_track_peak'                        '0.814440'

========================== row from database ==========================
                                              'id'  923137
                                            'path'  /data/Music/Bulk/00localcharacter/french tanguerooo/plácido domingo - alma de bohemio.mp3
                                         'working'  None
                                         'bitrate'  121
                                    'duration_sec'  199
                                           'genre'  loc-style-tango or milonga
                                        'filesize'  3022959
                                           'mtime'  1620528387
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter plácido domingo alma de bohemio loc style tango or milonga
                                      'tag_artist'  Placido Domingo
                                     'tag_release'  french tanguerooo
                                       'tag_title'  Alma De Bohemio
                                             'bpm'  123.859
                                    'search_title'  'alma':1 'bohemio':3 'de':2
                                   'search_artist'  'domingo':2 'placido':1
                                  'search_release'  'french':1 'tanguerooo':2
                                     'search_rest'  'alma':4 'bohemio':6 'de':5 'domingo':3 'loc':7 'milonga':11 'or':10 'placido':1,2 'style':8 'tango':9
                                    'search_combo'  'alma':1A,11 'bohemio':3A,13 'de':2A,12 'domingo':5B,10 'french':6C 'loc':14 'milonga':18 'or':17 'placido':4B,8,9 'style':15 'tango':16 'tanguerooo':7C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['opera', 'classical', 'tenor', 'spanish', 'male vocalists']
                                        'tag_date'  2001
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528387.4336896  (2021-05-09 04:46:27)
                             'size'  3022959