======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '190'
                                          'artist'  'Gaumont British Dance Band'
                                     'text_people'  ''
                                         'release'  'Regal Zonophone MR 1505'
                                           'title'  "Don't You Cry When You Say Goodbye (v - Sam Browne)"
                                           '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-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'  '1934'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '136.551'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Regal Zonophone MR 1505'
'TBPM' (BPM (beats per minute))                     '136.551'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1934'
'TIT2' (Title/songname/content description)         "Don't You Cry When You Say Goodbye (v - Sam Browne)"
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'Gaumont British Dance Band'
'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'                                       '3'
'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'                        '+0.05 dB'
'TXXX:replaygain_track_peak'                        '0.470480'

========================== row from database ==========================
                                              'id'  670087
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1934/Gaumont British Dance Band - Don’t You Cry When You Say Goodbye (v - Sam Browne) 3-11-1934.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  190
                                           'genre'  prerock-unsorted
                                        'filesize'  3804978
                                           'mtime'  1621697974
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1934 Don’t 3 11 1934 prerock unsorted
                                      'tag_artist'  Gaumont British Dance Band
                                     'tag_release'  Regal Zonophone MR 1505
                                       'tag_title'  Don't You Cry When You Say Goodbye (v - Sam Browne)
                                             'bpm'  136.551
                                    'search_title'  'browne':12,13 'cry':5 'don':1 'dont':3 'goodbye':8 'sam':11 'say':7 't':2 'v':9,10 'when':6 'you':4
                                   'search_artist'  'band':4 'british':2 'dance':3 'gaumont':1
                                  'search_release'  '1505':4 'mr':3 'regal':1 'zonophone':2
                                     'search_rest'  '00oldiepop':5 '1934':6 '3':9 'country':4 'don':7 'exotica':2 'jazz':1 'oldies':3 'prerock':10 't':8 'unsorted':11
                                    'search_combo'  '00oldiepop':26 '1505':21C '1934':27 '3':30 'band':17B 'british':15B 'browne':12A,13A 'country':25 'cry':5A 'dance':16B 'don':1A,28 'dont':3A 'exotica':23 'gaumont':14B 'goodbye':8A 'jazz':22 'mr':20C 'oldies':24 'prerock':31 'regal':18C 'sam':11A 'say':7A 't':2A,29 'unsorted':32 'v':9A,10A 'when':6A 'you':4A 'zonophone':19C
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             '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-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1934
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621697974.1877074  (2021-05-22 17:39:34)
                             'size'  3804978