======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '81'
                                          'artist'  'Duane Eddy'
                                     'text_people'  'Hazelwood/Eddy'
                                         'release'  'Compact Command Performances'
                                           'title'  'Some Kinda Earthquake'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['instrumental', 'rock and roll', 'oldies', 'rockabilly', 'rock n roll']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rockabilly'
                                             'bpm'  '120.256'
                                             'key'  '11B'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-229 POS 37'
'COMM:ID3v1 Comment:XXX'                            '59-229 POS 37'
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x005\x00+\x009\x006\x00+\x002\x003\x00A\x00C\x00+\x004\x00E\x002\x007\x00+\x007\x003\x002\x005\x00+\x009\x005\x005\x008\x00+\x00B\x003\x00C\x009\x00+\x00D\x008\x00C\x00C\x00+\x001\x000\x002\x002\x000\x00+\x001\x002\x00A\x00F\x007\x00+\x001\x005\x001\x002\x003\x00+\x001\x006\x009\x001\x008\x00+\x001\x008\x007\x001\x00D\x00+\x001\x00A\x009\x009\x001\x00+\x001\x00D\x00C\x006\x005\x00+\x002\x000\x000\x005\x005\x00+\x002\x002\x005\x003\x000\x00+\x002\x004\x00F\x003\x00B\x00+\x002\x007\x003\x003\x005\x00+\x002\x009\x00D\x003\x008\x00+\x002\x00C\x003\x007\x008\x00+\x002\x00F\x001\x000\x004\x00+\x003\x001\x003\x002\x001\x00\x00\x00')
'PRIV:AverageLevel:6\x12\x00\x00'                   PRIV(owner='AverageLevel', data=b'6\x12\x00\x00')
'PRIV:PeakValue:\x82y\x00\x00'                      PRIV(owner='PeakValue', data=b'\x82y\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 \x00 \x006\x006\x000\x002\x00;\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x00 \x00 \x006\x006\x000\x002\x00;\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:)\x9b\x0bXñ×cF\x93\x9b6OBÏ/\x89'  PRIV(owner='WM/WMCollectionGroupID', data=b')\x9b\x0bX\xf1\xd7cF\x93\x9b6OB\xcf/\x89')
'PRIV:WM/WMCollectionID:)\x9b\x0bXñ×cF\x93\x9b6OBÏ/\x89'  PRIV(owner='WM/WMCollectionID', data=b')\x9b\x0bX\xf1\xd7cF\x93\x9b6OB\xcf/\x89')
'PRIV:WM/WMContentID:~2ßJ\x95·TC¼îz\x88û=ûÙ'        PRIV(owner='WM/WMContentID', data=b'~2\xdfJ\x95\xb7TC\xbc\xeez\x88\xfb=\xfb\xd9')
'TALB' (Album/Movie/Show title)                     'Compact Command Performances'
'TBPM' (BPM (beats per minute))                     '120.256'
'TCOM' (Composer)                                   'Hazelwood/Eddy'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rockabilly'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         'Some Kinda Earthquake'
'TKEY' (Initial key)                                '11B'
'TLEN' (Length)                                     '81773'
'TPE1' (Lead performer(s)/Soloist(s))               'Duane Eddy'
'TPE2' (Band/orchestra/accompaniment)               'Duane Eddy'
'TPUB' (Publisher)                                  'Motown'
'TRCK' (Track number/Position in set)               '10'
'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'                                   ['instrumental', 'rock and roll', 'oldies', 'rockabilly', 'rock n roll']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+0.77 dB'
'TXXX:replaygain_track_peak'                        '0.472084'

========================== row from database ==========================
                                              'id'  1447378
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-229 - Duane Eddy - Some Kind-A Earthquake.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  81
                                           'genre'  rock-pop-early-rockabilly
                                        'filesize'  3265907
                                           'mtime'  1622659482
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 229 A rock pop early rockabilly
                                      'tag_artist'  Duane Eddy
                                     'tag_release'  Compact Command Performances
                                       'tag_title'  Some Kinda Earthquake
                                             'bpm'  120.256
                                    'search_title'  'earthquake':3 'kinda':2 'some':1
                                   'search_artist'  'duane':1 'eddy':2
                                  'search_release'  'command':2 'compact':1 'performances':3
                                     'search_rest'  '00oldiepop':5 '1959':6 '229':8 '59':7 'a':9 'country':4 'early':12 'exotica':2 'jazz':1 'oldies':3 'pop':11 'rock':10 'rockabilly':13
                                    'search_combo'  '00oldiepop':13 '1959':14 '229':16 '59':15 'a':17 'command':7C 'compact':6C 'country':12 'duane':4B 'early':20 'earthquake':3A 'eddy':5B 'exotica':10 'jazz':9 'kinda':2A 'oldies':11 'performances':8C 'pop':19 'rock':18 'rockabilly':21 'some':1A
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  11B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', '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-4', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['instrumental', 'rock and roll', 'oldies', 'rockabilly', 'rock n roll']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622659482.258571  (2021-06-02 20:44:42)
                             'size'  3265907