======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '180'
                                          'artist'  'Eddie Cantor'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "No One Knows What It's All About"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['big band', '1920s', 'jazz', 'all', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1924'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '110.122'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '110.122'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1924'
'TIT2' (Title/songname/content description)         "No One Knows What It's All About"
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Eddie Cantor'
'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'                                   ['big band', '1920s', 'jazz', 'all', 'swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'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'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.49 dB'
'TXXX:replaygain_track_peak'                        '0.564071'

========================== row from database ==========================
                                              'id'  1511461
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1924/Eddie Cantor - No One Knows What It_s All About 8-8-1924.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  180
                                           'genre'  prerock-swing
                                        'filesize'  3606322
                                           'mtime'  1620559873
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1924 It_s 8 8 1924 prerock swing
                                      'tag_artist'  Eddie Cantor
                                     'tag_release'  None
                                       'tag_title'  No One Knows What It's All About
                                             'bpm'  110.122
                                    'search_title'  'about':9 'all':8 'it':5 'its':7 'knows':3 'no':1 'one':2 's':6 'what':4
                                   'search_artist'  'cantor':2 'eddie':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1924':6 '8':9 'country':4 'exotica':2 'it':7 'jazz':1 'oldies':3 'prerock':10 's':8 'swing':11
                                    'search_combo'  '00oldiepop':16 '1924':17 '8':20 'about':9A 'all':8A 'cantor':11B 'country':15 'eddie':10B 'exotica':13 'it':5A,18 'its':7A 'jazz':12 'knows':3A 'no':1A 'oldies':14 'one':2A 'prerock':21 's':6A,19 'swing':22 'what':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['big band', '1920s', 'jazz', 'all', 'swing']
                                        'tag_date'  1924
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559873.37912  (2021-05-09 13:31:13)
                             'size'  3606322