======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '111'
                                          'artist'  'Ronald & Ruby'
                                     'text_people'  'B. Ross/J. Denton'
                                         'release'  'Treasured Tunes, Vol. 8'
                                           'title'  'Lollipop'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['50s', 'rock and roll', 'pop', 'oldies', '1958']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  ''
                                            'date'  '1958'
                                        'comments'  ''
                                           'genre'  'prerock-vocal-easy'
                                             'bpm'  '145.371'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '58-165 POS 20'
'COMM:ID3v1 Comment:XXX'                            '58-165 POS 20'
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x004\x00+\x009\x006\x00+\x002\x002\x008\x00A\x00+\x004\x003\x002\x008\x00+\x007\x002\x00D\x00F\x00+\x009\x00C\x007\x002\x00+\x00C\x007\x00F\x00B\x00+\x00F\x001\x00F\x001\x00+\x001\x001\x009\x004\x00F\x00+\x001\x004\x000\x00F\x002\x00+\x001\x007\x000\x003\x009\x00+\x001\x009\x009\x00C\x001\x00+\x001\x00C\x006\x007\x004\x00+\x001\x00E\x00C\x001\x00E\x00+\x002\x001\x009\x004\x009\x00+\x002\x004\x00F\x009\x00C\x00+\x002\x007\x008\x004\x006\x00+\x002\x00B\x003\x00E\x00C\x00+\x002\x00E\x006\x00E\x00E\x00+\x003\x001\x00E\x006\x008\x00+\x003\x005\x00A\x009\x008\x00+\x003\x00A\x001\x000\x006\x00\x00\x00')
'PRIV:AverageLevel:ã\x17\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xe3\x17\x00\x00')
'PRIV:PeakValue:ý\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xfd\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')
'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 \x004\x009\x006\x004\x007\x001\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00V\x00A\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x004\x008\x001\x007\x008\x009\x008\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x004\x009\x006\x004\x007\x001\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00V\x00A\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x004\x008\x001\x007\x008\x009\x008\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:¯CÏiWWtNªÌ\x06ñß[oÐ'   PRIV(owner='WM/WMCollectionGroupID', data=b'\xafC\xcfiWWtN\xaa\xcc\x06\xf1\xdf[o\xd0')
'PRIV:WM/WMCollectionID:¯CÏiWWtNªÌ\x06ñß[oÐ'        PRIV(owner='WM/WMCollectionID', data=b'\xafC\xcfiWWtN\xaa\xcc\x06\xf1\xdf[o\xd0')
'PRIV:WM/WMContentID:Q9|*Ö\x83ûF³èvA\xa0\x97\x06r'  PRIV(owner='WM/WMContentID', data=b'Q9|*\xd6\x83\xfbF\xb3\xe8vA\xa0\x97\x06r')
'TALB' (Album/Movie/Show title)                     'Treasured Tunes, Vol. 8'
'TBPM' (BPM (beats per minute))                     '145.371'
'TCOM' (Composer)                                   'B. Ross/J. Denton'
'TCON' (Content type, a.k.a. Genre)                 'prerock-vocal-easy'
'TDRC' (Recording time)                             '1958'
'TIT2' (Title/songname/content description)         'Lollipop'
'TKEY' (Initial key)                                '4A'
'TLEN' (Length)                                     '111333'
'TPE1' (Lead performer(s)/Soloist(s))               'Ronald & Ruby'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Stardust'
'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'                                   ['50s', 'rock and roll', 'pop', 'oldies', '1958']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '1'
'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'                        '-0.07 dB'
'TXXX:replaygain_track_peak'                        '0.422163'

========================== row from database ==========================
                                              'id'  1454577
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1958/58-165 - Ronald & Ruby - Lollipop.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  111
                                           'genre'  prerock-vocal-easy
                                        'filesize'  4455033
                                           'mtime'  1621625786
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1958 58 165 prerock vocal easy
                                      'tag_artist'  Ronald & Ruby
                                     'tag_release'  Treasured Tunes, Vol. 8
                                       'tag_title'  Lollipop
                                             'bpm'  145.371
                                    'search_title'  'lollipop':1
                                   'search_artist'  'ronald':1 'ruby':2
                                  'search_release'  '8':6 'treasured':1 'tunes':2,3 'vol':4,5
                                     'search_rest'  '00oldiepop':5 '165':8 '1958':6 '58':7 'country':4 'easy':11 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'vocal':10
                                    'search_combo'  '00oldiepop':14 '165':17 '1958':15 '58':16 '8':9C 'country':13 'easy':20 'exotica':11 'jazz':10 'lollipop':1A 'oldies':12 'prerock':18 'ronald':2B 'ruby':3B 'treasured':4C 'tunes':5C,6C 'vocal':19 'vol':7C,8C
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  4A
                                           '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-1']
                                      'lastfmtags'  ['50s', 'rock and roll', 'pop', 'oldies', '1958']
                                        'tag_date'  1958
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621625786.2377949  (2021-05-21 21:36:26)
                             'size'  4455033