======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '172'
                                          'artist'  'Glenn Miller And His Orchestra'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "(There'll Be Blue Birds Over) The White Cliffs Of Dover"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['jazz', 'swing', 'big band', '40s', 'oldies']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '040a'
                                      'tracktotal'  ''
                                            'date'  '1942'
                                        'comments'  ''
                                           'genre'  'prerock-band'
                                             'bpm'  '141.909'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '141.909'
'TCON' (Content type, a.k.a. Genre)                 'prerock-band'
'TDRC' (Recording time)                             '1942'
'TIT2' (Title/songname/content description)         "(There'll Be Blue Birds Over) The White Cliffs Of Dover"
'TKEY' (Initial key)                                '5B'
'TPE1' (Lead performer(s)/Soloist(s))               'Glenn Miller And His Orchestra'
'TRCK' (Track number/Position in set)               '040a'
'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', 'swing', 'big band', '40s', 'oldies']
'TXXX:q-bass'                                       '1'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.92 dB'
'TXXX:replaygain_track_peak'                        '0.417451'

========================== row from database ==========================
                                              'id'  1505071
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1942/1942-040a - Glenn Miller And His Orchestra - (There_ll Be Blue Birds Over) The White Cliffs Of Dover.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  172
                                           'genre'  prerock-band
                                        'filesize'  6912141
                                           'mtime'  1620560995
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1942 1942 040a (There_ll prerock band
                                      'tag_artist'  Glenn Miller And His Orchestra
                                     'tag_release'  None
                                       'tag_title'  (There'll Be Blue Birds Over) The White Cliffs Of Dover
                                             'bpm'  141.909
                                    'search_title'  'be':4 'birds':6 'blue':5 'cliffs':11 'dover':13 'll':2 'of':12 'over':7,8 'the':9 'there':1 'therell':3 'white':10
                                   'search_artist'  'and':3 'glenn':1 'his':4 'miller':2 'orchestra':5
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '040a':7 '1942':6 'band':13 'country':4 'exotica':2 'jazz':1 'll':9,11 'oldies':3 'prerock':12 'there':8,10
                                    'search_combo'  '00oldiepop':23 '040a':25 '1942':24 'and':16B 'band':31 'be':4A 'birds':6A 'blue':5A 'cliffs':11A 'country':22 'dover':13A 'exotica':20 'glenn':14B 'his':17B 'jazz':19 'll':2A,27,29 'miller':15B 'of':12A 'oldies':21 'orchestra':18B 'over':7A,8A 'prerock':30 'the':9A 'there':1A,26,28 'therell':3A 'white':10A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-1', 'q-grit-1']
                                      'lastfmtags'  ['jazz', 'swing', 'big band', '40s', 'oldies']
                                        'tag_date'  1942
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620560994.9026423  (2021-05-09 13:49:54)
                             'size'  6912141