======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '149'
                                          'artist'  'Yvette Horner'
                                     'text_people'  ''
                                         'release'  'Yvette Horner y su acordeón'
                                           'title'  'l accordeoniste'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-2', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'a 2414 loved tracks', 'accordeon', 'musette', 'accordion']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1965'
                                        'comments'  ''
                                           'genre'  'mi-accordeon'
                                             'bpm'  '126.647'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Yvette Horner y su acordeón'
'TBPM' (BPM (beats per minute))                     '126.647'
'TCON' (Content type, a.k.a. Genre)                 'mi-accordeon'
'TDRC' (Recording time)                             '1965'
'TIT2' (Title/songname/content description)         'l accordeoniste'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Yvette Horner'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['instrumental', 'a 2414 loved tracks', 'accordeon', 'musette', 'accordion']
'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-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.73 dB'
'TXXX:replaygain_track_peak'                        '0.430648'

========================== row from database ==========================
                                              'id'  935505
                                            'path'  /data/Music/Bulk/00localcharacter/00mid-north-europe/00french/Accordeón alegre/Yvette Horner - l accordeoniste.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  149
                                           'genre'  mi-accordeon
                                        'filesize'  3579737
                                           'mtime'  1620528273
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00mid north europe 00french Accordeón alegre mi
                                      'tag_artist'  Yvette Horner
                                     'tag_release'  Yvette Horner y su acordeón
                                       'tag_title'  l accordeoniste
                                             'bpm'  126.647
                                    'search_title'  'accordeoniste':2 'l':1
                                   'search_artist'  'horner':2 'yvette':1
                                  'search_release'  'acordeon':5,6 'horner':2 'su':4 'y':3 'yvette':1
                                     'search_rest'  '00french':4 '00mid':1 'accordeon':5,6 'alegre':7 'europe':3 'mi':8 'north':2
                                    'search_combo'  '00french':14 '00mid':11 'accordeon':15,16 'accordeoniste':2A 'acordeon':9C,10C 'alegre':17 'europe':13 'horner':4B,6C 'l':1A 'mi':18 'north':12 'su':8C 'y':7C 'yvette':3B,5C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['instrumental', 'a 2414 loved tracks', 'accordeon', 'musette', 'accordion']
                                        'tag_date'  1965
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528273.3602762  (2021-05-09 04:44:33)
                             'size'  3579737