======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '136'
                                          'artist'  'Ronnie Hawkins'
                                     'text_people'  'Chuck Berry'
                                         'release'  'Four By Four'
                                           'title'  'Forty Days'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', "
 "'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', 'q-chart-1', "
 "'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['rockabilly', 'rock and roll', 'rock', 'classic rock', '50s']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '127.685'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-276 POS 45'
'COMM:ID3v1 Comment:XXX'                            '59-276 POS 45'
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x000\x00+\x00B\x006\x00+\x002\x009\x00E\x00A\x00+\x004\x00C\x003\x008\x00+\x007\x001\x00F\x009\x00+\x009\x009\x002\x00C\x00+\x00C\x000\x001\x002\x00+\x00E\x009\x00F\x002\x00+\x001\x001\x003\x007\x005\x00+\x001\x003\x00A\x00E\x007\x00+\x001\x006\x002\x009\x007\x00+\x001\x008\x009\x009\x005\x00+\x001\x00B\x001\x005\x004\x00+\x001\x00D\x00C\x006\x008\x00+\x002\x000\x004\x006\x00F\x00+\x002\x002\x00A\x007\x001\x00+\x002\x005\x00A\x009\x006\x00+\x002\x008\x00D\x007\x007\x00\x00\x00')
'PRIV:AverageLevel:³\x0e\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xb3\x0e\x00\x00')
'PRIV:PeakValue:þ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xfe\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:;\x00\x00\x00'        PRIV(owner='WM/UniqueFileIdentifier', data=b';\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\x9a\x9c©këÈ\x08C¬\x8b\x03±xö¹Å'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x9a\x9c\xa9k\xeb\xc8\x08C\xac\x8b\x03\xb1x\xf6\xb9\xc5')
'PRIV:WM/WMCollectionID:\x9a\x9c©këÈ\x08C¬\x8b\x03±xö¹Å'  PRIV(owner='WM/WMCollectionID', data=b'\x9a\x9c\xa9k\xeb\xc8\x08C\xac\x8b\x03\xb1x\xf6\xb9\xc5')
'PRIV:WM/WMContentID:³=\x0b¤Qá\x91L¨TS\x0c]¨¦Ô'     PRIV(owner='WM/WMContentID', data=b'\xb3=\x0b\xa4Q\xe1\x91L\xa8TS\x0c]\xa8\xa6\xd4')
'TALB' (Album/Movie/Show title)                     'Four By Four'
'TBPM' (BPM (beats per minute))                     '127.685'
'TCOM' (Composer)                                   'Chuck Berry'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         'Forty Days'
'TKEY' (Initial key)                                '8A'
'TLEN' (Length)                                     '136626'
'TPE1' (Lead performer(s)/Soloist(s))               'Ronnie Hawkins'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Stardust'
'TRCK' (Track number/Position in set)               '13'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rockabilly', 'rock and roll', 'rock', 'classic rock', '50s']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'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'                        '+0.36 dB'
'TXXX:replaygain_track_peak'                        '0.703970'

========================== row from database ==========================
                                              'id'  1429318
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-276 - Ronnie Hawkins - Forty Days.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  136
                                           'genre'  prerock-unsorted
                                        'filesize'  5464472
                                           'mtime'  1620387805
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 276 prerock unsorted
                                      'tag_artist'  Ronnie Hawkins
                                     'tag_release'  Four By Four
                                       'tag_title'  Forty Days
                                             'bpm'  127.685
                                    'search_title'  'days':2 'forty':1
                                   'search_artist'  'hawkins':2 'ronnie':1
                                  'search_release'  'by':2 'four':1
                                     'search_rest'  '00oldiepop':5 '1959':6 '276':8 '59':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':9 'unsorted':10
                                    'search_combo'  '00oldiepop':11 '1959':12 '276':14 '59':13 'by':6C 'country':10 'days':2A 'exotica':8 'forty':1A 'four':5C 'hawkins':4B 'jazz':7 'oldies':9 'prerock':15 'ronnie':3B 'unsorted':16
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  8A
                                           '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-2', 'q-drums-4', 'q-syn-1', 'q-chart-1', 'q-other-2', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['rockabilly', 'rock and roll', 'rock', 'classic rock', '50s']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620387804.6326823  (2021-05-07 13:43:24)
                             'size'  5464472