======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '200'
                                          'artist'  'Orquesta Tmpica Pedro Mario Maffia'
                                     'text_people'  ''
                                         'release'  'french tanguerooo'
                                           'title'  'Maipo  xx'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-LOCALNESS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-1', 'q-drums-1', 'q-other-4', 'q-vocals-1', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1936'
                                        'comments'  ''
                                           'genre'  'loc-style-tango or milonga'
                                             'bpm'  '123.632'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.OTHER (Other) b''
                                     
'TALB' (Album/Movie/Show title)                     'french tanguerooo'
'TBPM' (BPM (beats per minute))                     '123.632'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-tango or milonga'
'TDRC' (Recording time)                             '1936'
'TENC' (Encoded by)                                 'FrenchTanguero'
'TIT2' (Title/songname/content description)         'Maipo  xx'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Orquesta Tmpica Pedro Mario Maffia'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.93 dB'
'TXXX:replaygain_track_peak'                        '0.647019'

========================== row from database ==========================
                                              'id'  922476
                                            'path'  /data/Music/Bulk/00localcharacter/french tanguerooo/pedro mario maffia - maipo.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  200
                                           'genre'  loc-style-tango or milonga
                                        'filesize'  3211136
                                           'mtime'  1620528383
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter pedro mario maffia maipo loc style tango or milonga
                                      'tag_artist'  Orquesta Tmpica Pedro Mario Maffia
                                     'tag_release'  french tanguerooo
                                       'tag_title'  Maipo  xx
                                             'bpm'  123.632
                                    'search_title'  'maipo':1 'xx':2
                                   'search_artist'  'maffia':5 'mario':4 'orquesta':1 'pedro':3 'tmpica':2
                                  'search_release'  'french':1 'tanguerooo':2
                                     'search_rest'  'loc':5 'maffia':3 'maipo':4 'mario':2 'milonga':9 'or':8 'pedro':1 'style':6 'tango':7
                                    'search_combo'  'french':8C 'loc':14 'maffia':7B,12 'maipo':1A,13 'mario':6B,11 'milonga':18 'or':17 'orquesta':3B 'pedro':5B,10 'style':15 'tango':16 'tanguerooo':9C 'tmpica':4B 'xx':2A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1936
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528383.2677233  (2021-05-09 04:46:23)
                             'size'  3211136