======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '147'
                                          'artist'  'Chords'
                                     'text_people'  'Carl Feaster/Claude Feaster/Floyd McRae/James Edwards/James Keyes'
                                         'release'  'The Doo Wop Box Disc 1'
                                           'title'  'Sh-Boom'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['hip-hop', 'swedish', 'rap', 'swedish hiphop', 'hip hop']"
                                     'discogstags'  "['hip hop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '11'
                                      'tracktotal'  ''
                                            'date'  '1954'
                                        'comments'  ''
                                           'genre'  'rock-rockabilly or psychobilly'
                                             'bpm'  '136.551'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '54-030 POS 5'
'COMM:ID3v1 Comment:XXX'                            '54-030 POS 5'
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x009\x00+\x00B\x006\x00+\x003\x005\x00C\x005\x00+\x006\x009\x002\x00A\x00+\x00A\x000\x00B\x009\x00+\x00C\x008\x002\x000\x00+\x00F\x00E\x005\x00D\x00+\x001\x003\x002\x007\x00E\x00+\x001\x006\x00C\x006\x007\x00+\x001\x00A\x001\x008\x007\x00+\x001\x00D\x00D\x002\x006\x00+\x002\x000\x00C\x00B\x00C\x00+\x002\x003\x007\x00E\x001\x00+\x002\x006\x00B\x00B\x00F\x00+\x002\x009\x00A\x006\x00F\x00+\x002\x00C\x00E\x002\x002\x00+\x003\x000\x006\x008\x008\x00+\x003\x003\x003\x003\x000\x00+\x003\x005\x00B\x00E\x002\x00+\x003\x008\x006\x000\x000\x00+\x003\x00A\x00F\x007\x00A\x00+\x003\x00D\x00E\x00A\x00C\x00+\x004\x001\x000\x00A\x00F\x00+\x004\x004\x005\x004\x00F\x00+\x004\x007\x003\x00F\x003\x00+\x004\x00A\x003\x005\x00F\x00+\x004\x00C\x00B\x00B\x00E\x00\x00\x00')
'PRIV:AverageLevel:¼\x14\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xbc\x14\x00\x00')
'PRIV:PeakValue:g~\x00\x00'                         PRIV(owner='PeakValue', data=b'g~\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 \x002\x000\x003\x002\x008\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00V\x00A\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x002\x005\x009\x007\x007\x003\x000\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x002\x000\x003\x002\x008\x009\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00V\x00A\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x002\x005\x009\x007\x007\x003\x000\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:ºy\x1aÏ\x0c½àA°©§â\x1f¤bz'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xbay\x1a\xcf\x0c\xbd\xe0A\xb0\xa9\xa7\xe2\x1f\xa4bz')
'PRIV:WM/WMCollectionID:ºy\x1aÏ\x0c½àA°©§â\x1f¤bz'  PRIV(owner='WM/WMCollectionID', data=b'\xbay\x1a\xcf\x0c\xbd\xe0A\xb0\xa9\xa7\xe2\x1f\xa4bz')
'PRIV:WM/WMContentID:Z)îËÓ\x80\x1eDµ¨µæ\x17\rý\x8a'  PRIV(owner='WM/WMContentID', data=b'Z)\xee\xcb\xd3\x80\x1eD\xb5\xa8\xb5\xe6\x17\r\xfd\x8a')
'TALB' (Album/Movie/Show title)                     'The Doo Wop Box Disc 1'
'TBPM' (BPM (beats per minute))                     '136.551'
'TCOM' (Composer)                                   'Carl Feaster/Claude Feaster/Floyd McRae/James Edwards/James Keyes'
'TCON' (Content type, a.k.a. Genre)                 'rock-rockabilly or psychobilly'
'TDRC' (Recording time)                             '1954'
'TIT2' (Title/songname/content description)         'Sh-Boom'
'TKEY' (Initial key)                                '7B'
'TLEN' (Length)                                     '147266'
'TPE1' (Lead performer(s)/Soloist(s))               'Chords'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Rhino'
'TRCK' (Track number/Position in set)               '11'
'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:discogstags'                                  'hip hop'
'TXXX:lastfmtags'                                   ['hip-hop', 'swedish', 'rap', 'swedish hiphop', 'hip hop']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'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'                        '+0.88 dB'
'TXXX:replaygain_track_peak'                        '0.492266'

========================== row from database ==========================
                                              'id'  1433957
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1954/54-030 - Chords - Sh-Boom.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  147
                                           'genre'  rock-rockabilly or psychobilly
                                        'filesize'  5889636
                                           'mtime'  1620525111
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1954 54 030 rock rockabilly psychobilly
                                      'tag_artist'  Chords
                                     'tag_release'  The Doo Wop Box Disc 1
                                       'tag_title'  Sh-Boom
                                             'bpm'  136.551
                                    'search_title'  'boom':2 'sh':1 'shboom':3
                                   'search_artist'  'chords':1
                                  'search_release'  '1':6 'box':4 'disc':5 'doo':2 'the':1 'wop':3
                                     'search_rest'  '00oldiepop':5 '1954':6 '54':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'psychobilly':10 'rock':8 'rockabilly':9
                                    'search_combo'  '00oldiepop':15 '1':10C '1954':16 '54':17 'boom':2A 'box':8C 'chords':4B 'country':14 'disc':9C 'doo':6C 'exotica':12 'jazz':11 'oldies':13 'psychobilly':20 'rock':18 'rockabilly':19 'sh':1A 'shboom':3A 'the':5C 'wop':7C
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  7B
                                           '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-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['hip-hop', 'swedish', 'rap', 'swedish hiphop', 'hip hop']
                                        'tag_date'  1954
                                     'discogstags'  ['hip hop']

============================== file details ==============================
                                           'mtime'  1620525111.116283  (2021-05-09 03:51:51)
                             'size'  5889636