======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '194'
                                          'artist'  'Boswell Sisters'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Old Yazoo'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'female vocalists', '1930s', 'big band', '30s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1932'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '138.797'
                                             'key'  '1B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '138.797'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1932'
'TIT2' (Title/songname/content description)         'Old Yazoo'
'TKEY' (Initial key)                                '1B'
'TPE1' (Lead performer(s)/Soloist(s))               'Boswell Sisters'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['jazz', 'female vocalists', '1930s', 'big band', '30s']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+3.06 dB'
'TXXX:replaygain_track_peak'                        '0.557183'

========================== row from database ==========================
                                              'id'  1451536
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1932/Boswell Sisters - Old Yazoo 29-6-1932.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  194
                                           'genre'  prerock-vocal
                                        'filesize'  3895094
                                           'mtime'  1620666411
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1932 29 6 1932 prerock vocal
                                      'tag_artist'  Boswell Sisters
                                     'tag_release'  None
                                       'tag_title'  Old Yazoo
                                             'bpm'  138.797
                                    'search_title'  'old':1 'yazoo':2
                                   'search_artist'  'boswell':1 'sisters':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1932':6 '29':7 '6':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'vocal':10
                                    'search_combo'  '00oldiepop':9 '1932':10 '29':11 '6':12 'boswell':3B 'country':8 'exotica':6 'jazz':5 'old':1A 'oldies':7 'prerock':13 'sisters':4B 'vocal':14 'yazoo':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1B
                                           '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-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'female vocalists', '1930s', 'big band', '30s']
                                        'tag_date'  1932
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620666411.2299378  (2021-05-10 19:06:51)
                             'size'  3895094