======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '219'
                                          'artist'  'Seasick Steve'
                                     'text_people'  ''
                                         'release'  'I Started Out with Nothin and I Still Got Most of It Left'
                                           'title'  'St. Louis Slim'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-2', 'Q-JZFKS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues rock', 'country', 'blues', 'folk', 'singer songwriter']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '102.592'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

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"PRIV:AverageLevel:{'\x00\x00"                      PRIV(owner='AverageLevel', data=b"{'\x00\x00")
'PRIV:PeakValue:¡\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xa1\x7f\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 \x001\x004\x002\x002\x008\x005\x007\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x008\x005\x009\x006\x006\x007\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x001\x004\x009\x008\x001\x007\x001\x008\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x001\x004\x002\x002\x008\x005\x007\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x008\x005\x009\x006\x006\x007\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x001\x004\x009\x008\x001\x007\x001\x008\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:öC4%;n\x01C¥+M¡Ï\tT\x89'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xf6C4%;n\x01C\xa5+M\xa1\xcf\tT\x89')
'PRIV:WM/WMCollectionID:öC4%;n\x01C¥+M¡Ï\tT\x89'    PRIV(owner='WM/WMCollectionID', data=b'\xf6C4%;n\x01C\xa5+M\xa1\xcf\tT\x89')
'PRIV:WM/WMContentID:ºÄÊ@W+çO\x9a\xa0¾\x02É)wÄ'     PRIV(owner='WM/WMContentID', data=b'\xba\xc4\xca@W+\xe7O\x9a\xa0\xbe\x02\xc9)w\xc4')
'TALB' (Album/Movie/Show title)                     'I Started Out with Nothin and I Still Got Most of It Left'
'TBPM' (BPM (beats per minute))                     '102.592'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'St. Louis Slim'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '219666'
'TPE1' (Lead performer(s)/Soloist(s))               'Seasick Steve'
'TPE2' (Band/orchestra/accompaniment)               'Seasick Steve'
'TPUB' (Publisher)                                  "WEA Int'l"
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['blues rock', 'country', 'blues', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.02 dB'
'TXXX:replaygain_track_peak'                        '0.389427'

========================== row from database ==========================
                                              'id'  1268258
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Seasick Steve/I Started Out With Nothing/03 st. louis slim.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  219
                                           'genre'  prerock-jb-blues
                                        'filesize'  8783348
                                           'mtime'  1620402545
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country With Nothing 03 st. louis slim prerock jb blues
                                      'tag_artist'  Seasick Steve
                                     'tag_release'  I Started Out with Nothin and I Still Got Most of It Left
                                       'tag_title'  St. Louis Slim
                                             'bpm'  102.592
                                    'search_title'  'louis':3 'slim':4 'st':1,2
                                   'search_artist'  'seasick':1 'steve':2
                                  'search_release'  'and':6 'got':8 'i':1 'it':11 'left':12 'most':9 'nothin':5 'of':10 'out':3 'started':2 'still':7 'with':4
                                     'search_rest'  'blues':13 'country':4 'exotica':2 'jazz':1 'jb':12 'louis':9 'nothing':6 'oldies':3 'prerock':11 'slim':10 'st':7,8 'with':5
                                    'search_combo'  'and':12C 'blues':31 'country':22 'exotica':20 'got':14C 'i':7C 'it':17C 'jazz':19 'jb':30 'left':18C 'louis':3A,27 'most':15C 'nothin':11C 'nothing':24 'of':16C 'oldies':21 'out':9C 'prerock':29 'seasick':5B 'slim':4A,28 'st':1A,2A,25,26 'started':8C 'steve':6B 'still':13C 'with':10C,23
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-4', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['blues rock', 'country', 'blues', 'folk', 'singer songwriter']
                                        'tag_date'  2008
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620402545.191829  (2021-05-07 17:49:05)
                             'size'  8783348