======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '275'
                                          'artist'  'Rodgers & Hammerstein'
                                     'text_people'  'Oscar Hammerstein II/Richard Rodgers'
                                         'release'  '20s and 30s popular'
                                           'title'  "People Will Say We're in Love"
                                           'quals'  ("['Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['musical', 'soundtrack', 'broadway', 'musicals']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1943'
                                        'comments'  ''
                                           'genre'  'soundtrack-video'
                                             'bpm'  '129.233'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x004\x00+\x009\x006\x00+\x003\x00C\x002\x000\x00+\x00A\x003\x004\x000\x00+\x00F\x004\x004\x002\x00+\x001\x002\x005\x002\x00C\x00+\x001\x00B\x001\x00A\x004\x00+\x001\x00E\x007\x008\x00F\x00+\x002\x002\x007\x00E\x000\x00+\x002\x006\x006\x00D\x00A\x00+\x002\x00A\x004\x00D\x001\x00+\x002\x00C\x00A\x00E\x007\x00+\x003\x000\x004\x002\x00D\x00+\x003\x004\x008\x005\x007\x00+\x003\x008\x00A\x009\x00A\x00+\x003\x00B\x00E\x001\x003\x00+\x003\x00F\x00D\x00A\x004\x00+\x004\x004\x00A\x00D\x004\x00+\x004\x007\x00C\x005\x007\x00+\x004\x00E\x004\x003\x000\x00+\x005\x002\x002\x004\x00E\x00+\x005\x004\x006\x00F\x000\x00\x00\x00')
'PRIV:AverageLevel:\x83\r\x00\x00'                  PRIV(owner='AverageLevel', data=b'\x83\r\x00\x00')
'PRIV:PeakValue:ðq\x00\x00'                         PRIV(owner='PeakValue', data=b'\xf0q\x00\x00')
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'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')
'PRIV:WM/Provider:A\x00M\x00G\x00\x00\x00'          PRIV(owner='WM/Provider', data=b'A\x00M\x00G\x00\x00\x00')
'PRIV:WM/UniqueFileIdentifier:A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x001\x007\x005\x003\x008\x007\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x001\x003\x004\x009\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x003\x004\x008\x001\x009\x009\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x001\x007\x005\x003\x008\x007\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x001\x003\x004\x009\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x003\x004\x008\x001\x009\x009\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:¶Un\n\x02\x939E\x85\x1d&.«\xad@ú'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xb6Un\n\x02\x939E\x85\x1d&.\xab\xad@\xfa')
'PRIV:WM/WMCollectionID:¶Un\n\x02\x939E\x85\x1d&.«\xad@ú'  PRIV(owner='WM/WMCollectionID', data=b'\xb6Un\n\x02\x939E\x85\x1d&.\xab\xad@\xfa')
'PRIV:WM/WMContentID:ò\x1eA\t=¬\xadI\x9a\tNN2\xad$v'  PRIV(owner='WM/WMContentID', data=b'\xf2\x1eA\t=\xac\xadI\x9a\tNN2\xad$v')
'TALB' (Album/Movie/Show title)                     '20s and 30s popular'
'TBPM' (BPM (beats per minute))                     '129.233'
'TCOM' (Composer)                                   'Oscar Hammerstein II/Richard Rodgers'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-video'
'TDRC' (Recording time)                             '1943'
'TIT2' (Title/songname/content description)         "People Will Say We're in Love"
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '276506'
'TPE1' (Lead performer(s)/Soloist(s))               'Nelson Eddy/Portia Nelson/Virginia Haskins'
'TPE2' (Band/orchestra/accompaniment)               'Rodgers & Hammerstein'
'TPUB' (Publisher)                                  'CBS'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['musical', 'soundtrack', 'broadway', 'musicals']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'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'                        '+2.46 dB'
'TXXX:replaygain_track_peak'                        '0.529899'

========================== row from database ==========================
                                              'id'  1509001
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1920s and 1930s popular/Nelson Eddy - People Will Say We_re in Love 1943.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  275
                                           'genre'  soundtrack-video
                                        'filesize'  4433309
                                           'mtime'  1620331583
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1920s 1930s Nelson Eddy We_re 1943 soundtrack video
                                      'tag_artist'  Rodgers & Hammerstein
                                     'tag_release'  20s and 30s popular
                                       'tag_title'  People Will Say We're in Love
                                             'bpm'  129.233
                                    'search_title'  'in':7 'love':8 'people':1 're':5 'say':3 'we':4 'were':6 'will':2
                                   'search_artist'  'hammerstein':2 'rodgers':1
                                  'search_release'  '20s':1 '30s':3 'and':2 'popular':4
                                     'search_rest'  '00oldiepop':5 '1920s':6 '1930s':7 '1943':12 'country':4 'eddy':9 'exotica':2 'jazz':1 'nelson':8 'oldies':3 're':11 'soundtrack':13 'video':14 'we':10
                                    'search_combo'  '00oldiepop':19 '1920s':20 '1930s':21 '1943':26 '20s':11C '30s':13C 'and':12C 'country':18 'eddy':23 'exotica':16 'hammerstein':10B 'in':7A 'jazz':15 'love':8A 'nelson':22 'oldies':17 'people':1A 'popular':14C 're':5A,25 'rodgers':9B 'say':3A 'soundtrack':27 'video':28 'we':4A,24 'were':6A 'will':2A
                                    '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-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['musical', 'soundtrack', 'broadway', 'musicals']
                                        'tag_date'  1943
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620331582.8576455  (2021-05-06 22:06:22)
                             'size'  4433309