======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '170'
                                          'artist'  'Sexteto Mayor'
                                     'text_people'  ''
                                         'release'  'Milongas'
                                           'title'  'La Puñalada'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'Q-PLAY-2', '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']")
                                      'lastfmtags'  "['tango argentino', 'argentina', 'tango', 'argentine tango']"
                                     'discogstags'  "['latin']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '14'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-style-tango or milonga'
                                             'bpm'  '122.141'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.OTHER (Other) b''
                                     
'TALB' (Album/Movie/Show title)                     'Milongas'
'TBPM' (BPM (beats per minute))                     '122.141'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-tango or milonga'
'TIT2' (Title/songname/content description)         'La Puñalada'
'TKEY' (Initial key)                                '9B'
'TLEN' (Length)                                     '170292'
'TPE1' (Lead performer(s)/Soloist(s))               'Sexteto Mayor'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '14'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'latin'
'TXXX:lastfmtags'                                   ['tango argentino', 'argentina', 'tango', 'argentine tango']
'TXXX:other'                                        'Castellano-Flores'
'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'                        '+1.67 dB'
'TXXX:replaygain_track_peak'                        '0.485389'

========================== row from database ==========================
                                              'id'  733564
                                            'path'  /data/Music/Bulk/00localcharacter/milongas/14 - La Puñalada (Castellano-Flores) Sexteto Mayor.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  170
                                           'genre'  loc-style-tango or milonga
                                        'filesize'  2727277
                                           'mtime'  1620528427
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter milongas 14 (Castellano Flores) loc style tango milonga
                                      'tag_artist'  Sexteto Mayor
                                     'tag_release'  Milongas
                                       'tag_title'  La Puñalada
                                             'bpm'  122.141
                                    'search_title'  'la':1 'punalada':2,3
                                   'search_artist'  'mayor':2 'sexteto':1
                                  'search_release'  'milongas':1
                                     'search_rest'  'castellano':2,3 'flores':4,5 'loc':6 'milonga':9 'milongas':1 'style':7 'tango':8
                                    'search_combo'  'castellano':8,9 'flores':10,11 'la':1A 'loc':12 'mayor':5B 'milonga':15 'milongas':6C,7 'punalada':2A,3A 'sexteto':4B 'style':13 'tango':14
                                    'tag_tracknum'  14
                                      'num_images'  1
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-3', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-2', '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'  ['tango argentino', 'argentina', 'tango', 'argentine tango']
                                        'tag_date'  
                                     'discogstags'  ['latin']

============================== file details ==============================
                                           'mtime'  1620528426.758665  (2021-05-09 04:47:06)
                             'size'  2727277