======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '181'
                                          'artist'  'Ambrose & Sam Browne'
                                     'text_people'  ''
                                         'release'  '20s and 30s popular'
                                           'title'  'When The Poppies Bloom Again'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', '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-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['amy winehouse', 'taged artists']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1935'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '98.645'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:ID3v1 Comment:XXX'                            'None'
'COMM:MusicMatch_Tempo:\x00\x00\x00'                'None'
'PRIV:AverageLevel:þ\r\x00\x00'                     PRIV(owner='AverageLevel', data=b'\xfe\r\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'TALB' (Album/Movie/Show title)                     '20s and 30s popular'
'TBPM' (BPM (beats per minute))                     '98.645'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1935'
'TIT2' (Title/songname/content description)         'When The Poppies Bloom Again'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '181000'
'TPE1' (Lead performer(s)/Soloist(s))               'Ambrose & Sam Browne'
'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'                                   ['amy winehouse', 'taged artists']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+10.46 dB'
'TXXX:replaygain_track_peak'                        '0.348371'

========================== row from database ==========================
                                              'id'  1147906
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Ambrose Mayfair Hotel Orchestra, Sam Browne - When the poppies bloom again.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  181
                                           'genre'  prerock-swing
                                        'filesize'  2916352
                                           'mtime'  1620559465
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s Mayfair Hotel Orchestra, the poppies bloom again prerock swing
                                      'tag_artist'  Ambrose & Sam Browne
                                     'tag_release'  20s and 30s popular
                                       'tag_title'  When The Poppies Bloom Again
                                             'bpm'  98.645
                                    'search_title'  'again':5 'bloom':4 'poppies':3 'the':2 'when':1
                                   'search_artist'  'ambrose':1 'browne':3 'sam':2
                                  'search_release'  '20s':1 '30s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':7 'again':15 'bloom':14 'country':4 'exotica':2 'hotel':9 'jazz':1 'mayfair':8 'oldies':3 'orchestra':10,11 'poppies':13 'prerock':16 'swing':17 'the':12
                                    'search_combo'  '00oldiepop':17 '1920s':18 '1930s':19 '20s':9C '30s':11C 'again':5A,27 'ambrose':6B 'and':10C 'bloom':4A,26 'browne':8B 'country':16 'exotica':14 'hotel':21 'jazz':13 'mayfair':20 'oldies':15 'orchestra':22,23 'poppies':3A,25 'popular':12C 'prerock':28 'sam':7B 'swing':29 'the':2A,24 'when':1A
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           '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-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['amy winehouse', 'taged artists']
                                        'tag_date'  1935
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620559465.4127672  (2021-05-09 13:24:25)
                             'size'  2916352