======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '186'
                                          'artist'  'Hatchett Swingtette'
                                     'text_people'  ''
                                         'release'  'Decca F 7336'
                                           'title'  'Scatterbrain (vocal - Beryl Davis + Vn Stephane Grappelli)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1939'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '121.774'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Decca F 7336'
'TBPM' (BPM (beats per minute))                     '121.774'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1939'
'TIT2' (Title/songname/content description)         'Scatterbrain (vocal - Beryl Davis + Vn Stephane Grappelli)'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Hatchett Swingtette'
'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: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'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+2.47 dB'
'TXXX:replaygain_track_peak'                        '0.481533'

========================== row from database ==========================
                                              'id'  1454351
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1939/Hatchett Swingtette - Scatterbrain (vocal - Beryl Davis + vn Stephane Grappelli) 29-12-1939.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  186
                                           'genre'  prerock-unsorted
                                        'filesize'  3724978
                                           'mtime'  1621698023
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1939 vn 29 12 1939 prerock unsorted
                                      'tag_artist'  Hatchett Swingtette
                                     'tag_release'  Decca F 7336
                                       'tag_title'  Scatterbrain (vocal - Beryl Davis + Vn Stephane Grappelli)
                                             'bpm'  121.774
                                    'search_title'  'beryl':4 'davis':5 'grappelli':8,9 'scatterbrain':1 'stephane':7 'vn':6 'vocal':2,3
                                   'search_artist'  'hatchett':1 'swingtette':2
                                  'search_release'  '7336':3 'decca':1 'f':2
                                     'search_rest'  '00oldiepop':5 '1939':6 '29':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'unsorted':10 'vn':7
                                    'search_combo'  '00oldiepop':19 '1939':20 '29':22 '7336':14C 'beryl':4A 'country':18 'davis':5A 'decca':12C 'exotica':16 'f':13C 'grappelli':8A,9A 'hatchett':10B 'jazz':15 'oldies':17 'prerock':23 'scatterbrain':1A 'stephane':7A 'swingtette':11B 'unsorted':24 'vn':6A,21 'vocal':2A,3A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           '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-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1939
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621698023.2051678  (2021-05-22 17:40:23)
                             'size'  3724978