======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '205'
                                          'artist'  'Woody Herman'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "I've Got The World On A String"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-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'  ("['jazz', 'big band', 'saxophone', 'swing', 'clarinet', 'not your granddaddys "
 "razzmatazz big band']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1945'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '94.021'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '94.021'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1945'
'TIT2' (Title/songname/content description)         "I've Got The World On A String"
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Woody Herman'
'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',
 'big band',
 'saxophone',
 'swing',
 'clarinet',
 'not your granddaddys razzmatazz big band']
'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'                        '+2.46 dB'
'TXXX:replaygain_track_peak'                        '0.558154'

========================== row from database ==========================
                                              'id'  1504241
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1945/Woody Herman - I_ve Got The World On A String 1945.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  205
                                           'genre'  prerock-band
                                        'filesize'  4101938
                                           'mtime'  1620561151
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1945 I_ve 1945 prerock band
                                      'tag_artist'  Woody Herman
                                     'tag_release'  None
                                       'tag_title'  I've Got The World On A String
                                             'bpm'  94.021
                                    'search_title'  'a':8 'got':4 'i':1 'ive':3 'on':7 'string':9 'the':5 've':2 'world':6
                                   'search_artist'  'herman':2 'woody':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1945':6 'band':10 'country':4 'exotica':2 'i':7 'jazz':1 'oldies':3 'prerock':9 've':8
                                    'search_combo'  '00oldiepop':16 '1945':17 'a':8A 'band':21 'country':15 'exotica':13 'got':4A 'herman':11B 'i':1A,18 'ive':3A 'jazz':12 'oldies':14 'on':7A 'prerock':20 'string':9A 'the':5A 've':2A,19 'woody':10B 'world':6A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5B
                                           '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-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'big band', 'saxophone', 'swing', 'clarinet', 'not your granddaddys razzmatazz big band']
                                        'tag_date'  1945
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561151.4194999  (2021-05-09 13:52:31)
                             'size'  4101938