======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '149'
                                          'artist'  'Margaret Whiting'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "I Can't Help It"
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['female vocalists', 'jazz', '40s', '50s', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1958'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '84.385'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '58-419 POS 74'
'COMM:ID3v1 Comment:XXX'                            '58-419 POS 74'
'TBPM' (BPM (beats per minute))                     '84.385'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1958'
'TIT2' (Title/songname/content description)         "I Can't Help It"
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Margaret Whiting'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['female vocalists', 'jazz', '40s', '50s', 'swing']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.59 dB'
'TXXX:replaygain_track_peak'                        '0.500297'

========================== row from database ==========================
                                              'id'  1516832
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1958/58-419 - Margaret Whiting - I Can_t Help It.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  149
                                           'genre'  prerock-swing
                                        'filesize'  5983002
                                           'mtime'  1620562663
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1958 58 419 Can_t prerock swing
                                      'tag_artist'  Margaret Whiting
                                     'tag_release'  None
                                       'tag_title'  I Can't Help It
                                             'bpm'  84.385
                                    'search_title'  'can':2 'cant':4 'help':5 'i':1 'it':6 't':3
                                   'search_artist'  'margaret':1 'whiting':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1958':6 '419':8 '58':7 'can':9 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':11 'swing':12 't':10
                                    'search_combo'  '00oldiepop':13 '1958':14 '419':16 '58':15 'can':2A,17 'cant':4A 'country':12 'exotica':10 'help':5A 'i':1A 'it':6A 'jazz':9 'margaret':7B 'oldies':11 'prerock':19 'swing':20 't':3A,18 'whiting':8B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['female vocalists', 'jazz', '40s', '50s', 'swing']
                                        'tag_date'  1958
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620562662.8577423  (2021-05-09 14:17:42)
                             'size'  5983002