======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '297'
                                          'artist'  'Dalida'
                                     'text_people'  ''
                                         'release'  'World tracks from various countries and albums'
                                           'title'  'Salma Ya Salama (Arabic)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-UNU-3', 'Q-OLDST-1', "
 "'Q-LOCALNESS-4', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['french', 'female vocalists', 'chanson francaise', 'pop', 'dalida']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-m'
                                             'bpm'  '125.470'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'World tracks from various countries and albums'
'TBPM' (BPM (beats per minute))                     '125.470'
'TCON' (Content type, a.k.a. Genre)                 'loc-m'
'TIT2' (Title/songname/content description)         'Salma Ya Salama (Arabic)'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Dalida'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TXXX:Mp3gain_minmax'                               '000,199'
'TXXX:Mp3gain_undo'                                 '+005,+005,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:lastfmtags'                                   ['french', 'female vocalists', 'chanson francaise', 'pop', 'dalida']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.47 dB'
'TXXX:replaygain_track_peak'                        '0.497833'

========================== row from database ==========================
                                              'id'  1530718
                                            'path'  /data/Music/Bulk/0soundtrack/VA - __World__ tracks from various countries & albums/Arabic Music [64k-128k]/Dalida - Salma Ya Salama (Arabic).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  297
                                           'genre'  loc-m
                                        'filesize'  4765457
                                           'mtime'  1620527811
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack VA __World__ & Music [64k 128k] loc
                                      'tag_artist'  Dalida
                                     'tag_release'  World tracks from various countries and albums
                                       'tag_title'  Salma Ya Salama (Arabic)
                                             'bpm'  125.47
                                    'search_title'  'arabic':4,5 'salama':3 'salma':1 'ya':2
                                   'search_artist'  'dalida':1
                                  'search_release'  'albums':7 'and':6 'countries':5 'from':3 'tracks':2 'various':4 'world':1
                                     'search_rest'  '0soundtrack':1 '128k':7,8 '64k':5,6 'loc':9 'music':4 'va':2 'world':3
                                    'search_combo'  '0soundtrack':14 '128k':20,21 '64k':18,19 'albums':13C 'and':12C 'arabic':4A,5A 'countries':11C 'dalida':6B 'from':9C 'loc':22 'music':17 'salama':3A 'salma':1A 'tracks':8C 'va':15 'various':10C 'world':7C,16 'ya':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['french', 'female vocalists', 'chanson francaise', 'pop', 'dalida']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527810.8901393  (2021-05-09 04:36:50)
                             'size'  4765457