======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '196'
                                          'artist'  'Bert Kaempfert'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Take The A-Train'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-LOCALNESS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'german', 'jazz', 'swing', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '00'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-lounge or exotica or bossa'
                                             'bpm'  '145.895'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '8-9-2001'
'COMM:ID3v1 Comment:XXX'                            '8-9-2001'
'TBPM' (BPM (beats per minute))                     '145.895'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-lounge or exotica or bossa'
'TIT2' (Title/songname/content description)         'Take The A-Train'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Bert Kaempfert'
'TRCK' (Track number/Position in set)               '00'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['instrumental', 'german', 'jazz', 'swing', 'easy listening']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+3.23 dB'
'TXXX:replaygain_track_peak'                        '0.584246'

========================== row from database ==========================
                                              'id'  792162
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Lounge/Kaempfert, Bert/Bert Kaempfert - Take the A-Train.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  196
                                           'genre'  prerock-jb-jazz-lounge or exotica or bossa
                                        'filesize'  3139660
                                           'mtime'  1620532131
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country Lounge Kaempfert, the prerock jb jazz lounge or exotica or bossa
                                      'tag_artist'  Bert Kaempfert
                                     'tag_release'  None
                                       'tag_title'  Take The A-Train
                                             'bpm'  145.895
                                    'search_title'  'a':3 'atrain':5 'take':1 'the':2 'train':4
                                   'search_artist'  'bert':1 'kaempfert':2
                                  'search_release'  
                                     'search_rest'  'bossa':12 'country':4 'exotica':2 'jazz':1 'jb':10 'kaempfert':6,7 'lounge':5 'oldies':3 'or':11 'prerock':9 'the':8
                                    'search_combo'  'a':3A 'atrain':5A 'bert':6B 'bossa':19 'country':11 'exotica':9 'jazz':8 'jb':17 'kaempfert':7B,13,14 'lounge':12 'oldies':10 'or':18 'prerock':16 'take':1A 'the':2A,15 'train':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-2', 'q-other-4', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'german', 'jazz', 'swing', 'easy listening']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620532130.6185377  (2021-05-09 05:48:50)
                             'size'  3139660