======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '138'
                                          'artist'  'A. Troilo-A. Cárdenas'
                                     'text_people'  ''
                                         'release'  'Milongas'
                                           'title'  'Ni más ni menos'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-3', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-style-tango or milonga'
                                             'bpm'  '107.208'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.OTHER (Other) b''
                                     
'TALB' (Album/Movie/Show title)                     'Milongas'
'TBPM' (BPM (beats per minute))                     '107.208'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-tango or milonga'
'TIT2' (Title/songname/content description)         'Ni más ni menos'
'TKEY' (Initial key)                                '1B'
'TLEN' (Length)                                     '138135'
'TPE1' (Lead performer(s)/Soloist(s))               'A. Troilo-A. Cárdenas'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '12'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:other'                                        'Paloma'
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.48 dB'
'TXXX:replaygain_track_peak'                        '0.493609'

========================== row from database ==========================
                                              'id'  734057
                                            'path'  /data/Music/Bulk/00localcharacter/milongas/12 - Ni más ni menos (Paloma) A. Troilo-A. Cárdenas.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  138
                                           'genre'  loc-style-tango or milonga
                                        'filesize'  2226581
                                           'mtime'  1620528426
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter milongas 12 (Paloma) loc style tango or milonga
                                      'tag_artist'  A. Troilo-A. Cárdenas
                                     'tag_release'  Milongas
                                       'tag_title'  Ni más ni menos
                                             'bpm'  107.208
                                    'search_title'  'mas':2,3 'menos':4 'ni':1
                                   'search_artist'  'a':1,2,4 'cardenas':6,7 'troilo':3 'troiloa':5
                                  'search_release'  'milongas':1
                                     'search_rest'  'loc':4 'milonga':8 'milongas':1 'or':7 'paloma':2,3 'style':5 'tango':6
                                    'search_combo'  'a':5B,6B,8B 'cardenas':10B,11B 'loc':16 'mas':2A,3A 'menos':4A 'milonga':20 'milongas':12C,13 'ni':1A 'or':19 'paloma':14,15 'style':17 'tango':18 'troilo':7B 'troiloa':9B
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  1B
                                           '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-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620528426.294896  (2021-05-09 04:47:06)
                             'size'  2226581