======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '102'
                                          'artist'  'Duane Eddy'
                                     'text_people'  'Casey'
                                         'release'  'Compact Command Performances'
                                           'title'  'Ramrod'
                                           '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-3', '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'  '11'
                                      'tracktotal'  ''
                                            'date'  '1958'
                                        'comments'  ''
                                           'genre'  'rock-pop-early-rockabilly'
                                             'bpm'  '110.603'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '58-224 POS 27'
'COMM:ID3v1 Comment:XXX'                            '58-224 POS 27'
'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:ç\x12\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xe7\x12\x00\x00')
'PRIV:PeakValue:¾j\x00\x00'                         PRIV(owner='PeakValue', data=b'\xbej\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:=¯£$äó\rDºü\x9b\x99\x87\x03\x0cZ'  PRIV(owner='WM/WMContentID', data=b'=\xaf\xa3$\xe4\xf3\rD\xba\xfc\x9b\x99\x87\x03\x0cZ')
'TALB' (Album/Movie/Show title)                     'Compact Command Performances'
'TBPM' (BPM (beats per minute))                     '110.603'
'TCOM' (Composer)                                   'Casey'
'TCON' (Content type, a.k.a. Genre)                 'rock-pop-early-rockabilly'
'TDRC' (Recording time)                             '1958'
'TIT2' (Title/songname/content description)         'Ramrod'
'TKEY' (Initial key)                                '1A'
'TLEN' (Length)                                     '102466'
'TPE1' (Lead performer(s)/Soloist(s))               'Duane Eddy'
'TPE2' (Band/orchestra/accompaniment)               'Duane Eddy'
'TPUB' (Publisher)                                  'Motown'
'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: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'                                      '3'
'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'                        '+1.93 dB'
'TXXX:replaygain_track_peak'                        '0.353255'

========================== row from database ==========================
                                              'id'  1437216
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1958/58-224 - Duane Eddy - Ramrod.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  102
                                           'genre'  rock-pop-early-rockabilly
                                        'filesize'  4093460
                                           'mtime'  1622659477
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1958 58 224 rock pop early rockabilly
                                      'tag_artist'  Duane Eddy
                                     'tag_release'  Compact Command Performances
                                       'tag_title'  Ramrod
                                             'bpm'  110.603
                                    'search_title'  'ramrod':1
                                   'search_artist'  'duane':1 'eddy':2
                                  'search_release'  'command':2 'compact':1 'performances':3
                                     'search_rest'  '00oldiepop':5 '1958':6 '224':8 '58':7 'country':4 'early':11 'exotica':2 'jazz':1 'oldies':3 'pop':10 'rock':9 'rockabilly':12
                                    'search_combo'  '00oldiepop':11 '1958':12 '224':14 '58':13 'command':5C 'compact':4C 'country':10 'duane':2B 'early':17 'eddy':3B 'exotica':8 'jazz':7 'oldies':9 'performances':6C 'pop':16 'ramrod':1A 'rock':15 'rockabilly':18
                                    'tag_tracknum'  11
                                      'num_images'  0
                                             'key'  1A
                                           '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-3', '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'  1958
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1622659477.2486098  (2021-06-02 20:44:37)
                             'size'  4093460