======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '195'
                                          'artist'  'Memphis Minnie=ma rainey'
                                     'text_people'  ''
                                         'release'  '1920s and 1930s popular'
                                           'title'  'Preachers Blues'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', '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']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1931'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '112.134'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
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'PRIV:WM/UniqueFileIdentifier:A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x001\x002\x007\x001\x009\x003\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x00 \x004\x005\x006\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x002\x001\x003\x002\x007\x005\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x001\x002\x007\x001\x009\x003\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x00 \x004\x005\x006\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x001\x002\x001\x003\x002\x007\x005\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\n&´\x1a@\x9doC¾ýÃ\\í\tB7'  PRIV(owner='WM/WMCollectionGroupID', data=b'\n&\xb4\x1a@\x9doC\xbe\xfd\xc3\\\xed\tB7')
'PRIV:WM/WMCollectionID:\n&´\x1a@\x9doC¾ýÃ\\í\tB7'  PRIV(owner='WM/WMCollectionID', data=b'\n&\xb4\x1a@\x9doC\xbe\xfd\xc3\\\xed\tB7')
'PRIV:WM/WMContentID:²ÐÞÐèY\x81C\x8fO¤\x95-\x0b\x84:'  PRIV(owner='WM/WMContentID', data=b'\xb2\xd0\xde\xd0\xe8Y\x81C\x8fO\xa4\x95-\x0b\x84:')
'TALB' (Album/Movie/Show title)                     '1920s and 1930s popular'
'TBPM' (BPM (beats per minute))                     '112.134'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1931'
'TIT2' (Title/songname/content description)         'Preachers Blues'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '195631'
'TMED' (Media type)                                 'DIG'
'TPE1' (Lead performer(s)/Soloist(s))               'Memphis Minnie=ma rainey'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Document'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'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'                        '+1.43 dB'
'TXXX:replaygain_track_peak'                        '0.602974'

========================== row from database ==========================
                                              'id'  1142568
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Ma Rainey - Preachers Blues 1931.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  195
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  3258584
                                           'mtime'  1620524662
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop Ma Rainey 1931 prerock jb jazz unsorted
                                      'tag_artist'  Memphis Minnie=ma rainey
                                     'tag_release'  1920s and 1930s popular
                                       'tag_title'  Preachers Blues
                                             'bpm'  112.134
                                    'search_title'  'blues':2 'preachers':1
                                   'search_artist'  'ma':3 'memphis':1 'minnie':2 'rainey':4
                                  'search_release'  '1920s':1 '1930s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1931':8 'country':4 'exotica':2 'jazz':1 'jb':10 'ma':6 'oldies':3 'prerock':9 'rainey':7 'unsorted':11
                                    'search_combo'  '00oldiepop':15 '1920s':7C '1930s':9C '1931':18 'and':8C 'blues':2A 'country':14 'exotica':12 'jazz':11 'jb':20 'ma':5B,16 'memphis':3B 'minnie':4B 'oldies':13 'popular':10C 'preachers':1A 'prerock':19 'rainey':6B,17 'unsorted':21
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', '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'  []
                                        'tag_date'  1931
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620524661.8087587  (2021-05-09 03:44:21)
                             'size'  3258584