======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '129'
                                          'artist'  'Jack Scott'
                                     'text_people'  'Jack Scott'
                                         'release'  'Greatest Hits'
                                           'title'  'Goodbye Baby'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['rock and roll', 'country', 'oldies', '50s', 'rockabilly']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'rock-pop-early'
                                             'bpm'  '130.398'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-073 POS 8'
'COMM:ID3v1 Comment:XXX'                            '59-073 POS 8'
'MCDI' (Music CD identifier)                        MCDI(data=b'B\x00+\x009\x006\x00+\x003\x001\x008\x000\x00+\x005\x007\x006\x004\x00+\x007\x00D\x002\x00F\x00+\x00A\x001\x002\x004\x00+\x00D\x000\x00B\x008\x00+\x00F\x00B\x002\x002\x00+\x001\x002\x002\x00A\x00F\x00+\x001\x004\x00B\x008\x006\x00+\x001\x007\x00B\x000\x006\x00+\x001\x00A\x00B\x00B\x009\x00+\x001\x00D\x00C\x00D\x00B\x00\x00\x00')
'PRIV:AverageLevel:\x8c\x11\x00\x00'                PRIV(owner='AverageLevel', data=b'\x8c\x11\x00\x00')
'PRIV:PeakValue:Ðt\x00\x00'                         PRIV(owner='PeakValue', data=b'\xd0t\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')
'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 \x00 \x001\x007\x005\x003\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x005\x003\x007\x001\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x004\x003\x001\x004\x008\x006\x002\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x00 \x001\x007\x005\x003\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x005\x003\x007\x001\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x004\x003\x001\x004\x008\x006\x002\x00\x00\x00')
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'PRIV:WM/WMCollectionID:\x9f×^Ò\x9aÝúM\xad¦\x95å\x10*\x06='  PRIV(owner='WM/WMCollectionID', data=b'\x9f\xd7^\xd2\x9a\xdd\xfaM\xad\xa6\x95\xe5\x10*\x06=')
'PRIV:WM/WMContentID:ëMEÖ³À¡E\x80ûô¥ô\x92óT'        PRIV(owner='WM/WMContentID', data=b'\xebME\xd6\xb3\xc0\xa1E\x80\xfb\xf4\xa5\xf4\x92\xf3T')
'TALB' (Album/Movie/Show title)                     'Greatest Hits'
'TBPM' (BPM (beats per minute))                     '130.398'
'TCOM' (Composer)                                   'Jack Scott'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         'Goodbye Baby'
'TKEY' (Initial key)                                '12B'
'TLEN' (Length)                                     '129333'
'TPE1' (Lead performer(s)/Soloist(s))               'Jack Scott'
'TPE2' (Band/orchestra/accompaniment)               'Jack Scott'
'TPUB' (Publisher)                                  'Total Recording'
'TRCK' (Track number/Position in set)               '2'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rock and roll', 'country', 'oldies', '50s', 'rockabilly']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'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'                        '-0.31 dB'
'TXXX:replaygain_track_peak'                        '0.641510'

========================== row from database ==========================
                                              'id'  1451801
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-073 - Jack Scott - Goodbye Baby.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  129
                                           'genre'  rock-pop-early
                                        'filesize'  5174937
                                           'mtime'  1620736417
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 073 rock pop early
                                      'tag_artist'  Jack Scott
                                     'tag_release'  Greatest Hits
                                       'tag_title'  Goodbye Baby
                                             'bpm'  130.398
                                    'search_title'  'baby':2 'goodbye':1
                                   'search_artist'  'jack':1 'scott':2
                                  'search_release'  'greatest':1 'hits':2
                                     'search_rest'  '00oldiepop':5 '1959':6 '59':7 'country':4 'early':10 'exotica':2 'jazz':1 'oldies':3 'pop':9 'rock':8
                                    'search_combo'  '00oldiepop':11 '1959':12 '59':13 'baby':2A 'country':10 'early':16 'exotica':8 'goodbye':1A 'greatest':5C 'hits':6C 'jack':3B 'jazz':7 'oldies':9 'pop':15 'rock':14 'scott':4B
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  12B
                                           '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-3', 'q-drums-2', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['rock and roll', 'country', 'oldies', '50s', 'rockabilly']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620736416.8162231  (2021-05-11 14:33:36)
                             'size'  5174937