======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '328'
                                          'artist'  'Anathema'
                                     'text_people'  ''
                                         'release'  'A Natural Disaster'
                                           'title'  'Harmonium'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['progressive rock', 'metal', 'atmospheric', 'doom metal', 'progressive "
 "metal']")
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '124.163'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:m\x15\x00\x00'                   PRIV(owner='AverageLevel', data=b'm\x15\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\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 \x006\x007\x008\x001\x000\x008\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x004\x005\x000\x008\x001\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x006\x008\x004\x008\x007\x003\x003\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x006\x007\x008\x001\x000\x008\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x004\x005\x000\x008\x001\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x006\x008\x004\x008\x007\x003\x003\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:\x03Z\x9a\x9dôjÝE\x8e\t£g\x99\x94gm'  PRIV(owner='WM/WMCollectionGroupID', data=b'\x03Z\x9a\x9d\xf4j\xddE\x8e\t\xa3g\x99\x94gm')
'PRIV:WM/WMCollectionID:\x03Z\x9a\x9dôjÝE\x8e\t£g\x99\x94gm'  PRIV(owner='WM/WMCollectionID', data=b'\x03Z\x9a\x9d\xf4j\xddE\x8e\t\xa3g\x99\x94gm')
'PRIV:WM/WMContentID:\x0f\x03o\x101}¾M\x9c×ÓûØN\x1fª'  PRIV(owner='WM/WMContentID', data=b'\x0f\x03o\x101}\xbeM\x9c\xd7\xd3\xfb\xd8N\x1f\xaa')
'TALB' (Album/Movie/Show title)                     'A Natural Disaster'
'TBPM' (BPM (beats per minute))                     '124.163'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         'Harmonium'
'TKEY' (Initial key)                                '5A'
'TPE1' (Lead performer(s)/Soloist(s))               'Anathema'
'TPUB' (Publisher)                                  'Koch'
'TRCK' (Track number/Position in set)               '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['progressive rock', 'metal', 'atmospheric', 'doom metal', 'progressive metal']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.60 dB'
'TXXX:replaygain_track_peak'                        '0.427625'

========================== row from database ==========================
                                              'id'  1412910
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/Anathema/A Natural Disaster/anathema - (01) harmonium.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  328
                                           'genre'  rock-cppex-progressive
                                        'filesize'  7894184
                                           'mtime'  1620736045
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy anathema (01) harmonium rock cppex progressive
                                      'tag_artist'  Anathema
                                     'tag_release'  A Natural Disaster
                                       'tag_title'  Harmonium
                                             'bpm'  124.163
                                    'search_title'  'harmonium':1
                                   'search_artist'  'anathema':1
                                  'search_release'  'a':1 'disaster':3 'natural':2
                                     'search_rest'  '01':3,4 'anathema':2 'classicprogpsy':1 'cppex':7 'harmonium':5 'progressive':8 'rock':6
                                    'search_combo'  '01':8,9 'a':3C 'anathema':2B,7 'classicprogpsy':6 'cppex':12 'disaster':5C 'harmonium':1A,10 'natural':4C 'progressive':13 'rock':11
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['progressive rock', 'metal', 'atmospheric', 'doom metal', 'progressive metal']
                                        'tag_date'  2003
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620736045.082487  (2021-05-11 14:27:25)
                             'size'  7894184