======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '158'
                                          'artist'  'Annette Hanshaw'
                                     'text_people'  ''
                                         'release'  '20s and 30s popular'
                                           'title'  "If You Can't Tell The World She's A Good Little Girl Just Say Nothing At All"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['1920s', 'jazz', 'female vocalists', '20s', 'oldies']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1926'
                                        'comments'  ''
                                           'genre'  'prerock-vocal'
                                             'bpm'  '137.478'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     '20s and 30s popular'
'TBPM' (BPM (beats per minute))                     '137.478'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal'
'TDRC' (Recording time)                             '1926'
'TIT2' (Title/songname/content description)         "If You Can't Tell The World She's A Good Little Girl Just Say Nothing At All"
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '158260'
'TPE1' (Lead performer(s)/Soloist(s))               'Annette Hanshaw'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['1920s', 'jazz', 'female vocalists', '20s', 'oldies']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.78 dB'
'TXXX:replaygain_track_peak'                        '0.404685'

========================== row from database ==========================
                                              'id'  1498350
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Annette Hanshaw - If you can_t tell the world she_s a good little girl.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  158
                                           'genre'  prerock-vocal
                                        'filesize'  2560085
                                           'mtime'  1621692707
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s you can_t tell the world she_s good little girl prerock vocal
                                      'tag_artist'  Annette Hanshaw
                                     'tag_release'  20s and 30s popular
                                       'tag_title'  If You Can't Tell The World She's A Good Little Girl Just Say Nothing At All
                                             'bpm'  137.478
                                    'search_title'  'a':12 'all':20 'at':19 'can':3 'cant':5 'girl':15 'good':13 'if':1 'just':16 'little':14 'nothing':18 's':10 'say':17 'she':9 'shes':11 't':4 'tell':6 'the':7 'world':8 'you':2
                                   'search_artist'  'annette':1 'hanshaw':2
                                  'search_release'  '20s':1 '30s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':7 'can':9 'country':4 'exotica':2 'girl':18 'good':16 'jazz':1 'little':17 'oldies':3 'prerock':19 's':15 'she':14 't':10 'tell':11 'the':12 'vocal':20 'world':13 'you':8
                                    'search_combo'  '00oldiepop':31 '1920s':32 '1930s':33 '20s':23C '30s':25C 'a':12A 'all':20A 'and':24C 'annette':21B 'at':19A 'can':3A,35 'cant':5A 'country':30 'exotica':28 'girl':15A,44 'good':13A,42 'hanshaw':22B 'if':1A 'jazz':27 'just':16A 'little':14A,43 'nothing':18A 'oldies':29 'popular':26C 'prerock':45 's':10A,41 'say':17A 'she':9A,40 'shes':11A 't':4A,36 'tell':6A,37 'the':7A,38 'vocal':46 'world':8A,39 'you':2A,34
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  6A
                                           '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-2', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['1920s', 'jazz', 'female vocalists', '20s', 'oldies']
                                        'tag_date'  1926
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621692706.8637667  (2021-05-22 16:11:46)
                             'size'  2560085