======================== unified (from filesystem) ========================
                                         'bitrate'  '64.0'
                                        'duration'  '136'
                                          'artist'  'Ignacio Corsini'
                                     'text_people'  ''
                                         'release'  'french tanguerooo'
                                           'title'  'Cuando Llora La Milonga'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-LOCALNESS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['latino americain', 'tango argentino', 'latin', 'tango dancing', 'tango']"
                                     'discogstags'  "['latin', 'tango']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1925'
                                        'comments'  ''
                                           'genre'  'loc-style-tango or milonga'
                                             'bpm'  '134.914'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'COMM::\x00\x02\x00'                                '1925 -1930'
'COMM:ID3v1 Comment:XXX'                            '1925 -1930'
'TALB' (Album/Movie/Show title)                     'french tanguerooo'
'TBPM' (BPM (beats per minute))                     '134.914'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-tango or milonga'
'TDRC' (Recording time)                             '1925'
'TENC' (Encoded by)                                 'FrenchTanguero'
'TIT2' (Title/songname/content description)         'Cuando Llora La Milonga'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ignacio Corsini'
'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-UNU'                                        '2'
'TXXX:discogstags'                                  ['latin', 'tango']
'TXXX:lastfmtags'                                   ['latino americain', 'tango argentino', 'latin', 'tango dancing', 'tango']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'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'                        '+1.69 dB'
'TXXX:replaygain_track_peak'                        '0.484616'

========================== row from database ==========================
                                              'id'  924914
                                            'path'  /data/Music/Bulk/00localcharacter/french tanguerooo/ignacio corsini - cuando llora la milonga.mp3
                                         'working'  None
                                         'bitrate'  64
                                    'duration_sec'  136
                                           'genre'  loc-style-tango or milonga
                                        'filesize'  1097801
                                           'mtime'  1620528345
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter ignacio corsini cuando llora la milonga loc style tango milonga
                                      'tag_artist'  Ignacio Corsini
                                     'tag_release'  french tanguerooo
                                       'tag_title'  Cuando Llora La Milonga
                                             'bpm'  134.914
                                    'search_title'  'cuando':1 'la':3 'llora':2 'milonga':4
                                   'search_artist'  'corsini':2 'ignacio':1
                                  'search_release'  'french':1 'tanguerooo':2
                                     'search_rest'  'corsini':2 'cuando':3 'ignacio':1 'la':5 'llora':4 'loc':7 'milonga':6 'style':8 'tango':9
                                    'search_combo'  'corsini':6B,10 'cuando':1A,11 'french':7C 'ignacio':5B,9 'la':3A,13 'llora':2A,12 'loc':15 'milonga':4A,14 'style':16 'tango':17 'tanguerooo':8C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12A
                                           '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-2', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['latino americain', 'tango argentino', 'latin', 'tango dancing', 'tango']
                                        'tag_date'  1925
                                     'discogstags'  ['latin', 'tango']

============================== file details ==============================
                                           'mtime'  1620528345.147613  (2021-05-09 04:45:45)
                             'size'  1097801