======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '179'
                                          'artist'  'Rudy Vallee'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Me Minus You'
                                           'quals'  ("['Q-JZFKS-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-1', 'q-play-2', 'q-chart-1', "
 "'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-1']")
                                      'lastfmtags'  "['20s', 'jazz', '30s', 'american']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1932'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '84.3'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '84.3'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1932-09-09'
'TIT2' (Title/songname/content description)         'Me Minus You'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Rudy Vallee'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['20s', 'jazz', '30s', 'american']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.63 dB'
'TXXX:replaygain_track_peak'                        '0.672424'

========================== row from database ==========================
                                              'id'  1470697
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1932/Rudy Vallee - Me Minus You 9-9-1932.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  179
                                           'genre'  prerock-vocal
                                        'filesize'  3684207
                                           'mtime'  1620384897
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1932 9 9 1932 prerock vocal
                                      'tag_artist'  Rudy Vallee
                                     'tag_release'  None
                                       'tag_title'  Me Minus You
                                             'bpm'  84.3
                                    'search_title'  'me':1 'minus':2 'you':3
                                   'search_artist'  'rudy':1 'vallee':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1932':6 '9':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'vocal':9
                                    'search_combo'  '00oldiepop':10 '1932':11 '9':12 'country':9 'exotica':7 'jazz':6 'me':1A 'minus':2A 'oldies':8 'prerock':13 'rudy':4B 'vallee':5B 'vocal':14 'you':3A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['20s', 'jazz', '30s', 'american']
                                        'tag_date'  1932
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620384897.1215272  (2021-05-07 12:54:57)
                             'size'  3684207