======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '201'
                                          'artist'  'The Mountain Goats'
                                     'text_people'  'John Darnielle'
                                         'release'  'Heretic Pride'
                                           'title'  'So Desperate'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'acoustic', 'lo fi', 'folk', 'pxs: loved']"
                                     'discogstags'  "['rock', 'folk rock', 'indie rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '134.5'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'MCDI' (Music CD identifier)                        MCDI(data=b'D\x00+\x009\x006\x00+\x004\x001\x003\x001\x00+\x007\x00B\x008\x002\x00+\x00B\x00C\x00C\x001\x00+\x00F\x00B\x007\x003\x00+\x001\x002\x00E\x009\x003\x00+\x001\x006\x009\x009\x009\x00+\x001\x00A\x007\x009\x00F\x00+\x001\x00E\x00A\x00C\x005\x00+\x002\x002\x005\x007\x005\x00+\x002\x006\x002\x003\x00A\x00+\x002\x009\x00D\x002\x008\x00+\x002\x00D\x00E\x009\x00F\x00+\x003\x001\x001\x001\x006\x00\x00\x00')
'PRIV:AverageLevel:{\x0e\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x0e\x00\x00')
'PRIV:PeakValue:¡h\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1h\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')
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'PRIV:WM/WMCollectionGroupID:Åô±\x9bò\x9d^@\x90s\x03\x9f\x15å9¯'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xc5\xf4\xb1\x9b\xf2\x9d^@\x90s\x03\x9f\x15\xe59\xaf')
'PRIV:WM/WMCollectionID:Åô±\x9bò\x9d^@\x90s\x03\x9f\x15å9¯'  PRIV(owner='WM/WMCollectionID', data=b'\xc5\xf4\xb1\x9b\xf2\x9d^@\x90s\x03\x9f\x15\xe59\xaf')
'PRIV:WM/WMContentID:áÈ%\x85V\x89¼C\x9cJb)G5?P'     PRIV(owner='WM/WMContentID', data=b'\xe1\xc8%\x85V\x89\xbcC\x9cJb)G5?P')
'TALB' (Album/Movie/Show title)                     'Heretic Pride'
'TBPM' (BPM (beats per minute))                     '134.5'
'TCOM' (Composer)                                   'John Darnielle'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDRC' (Recording time)                             '2008'
'TIT2' (Title/songname/content description)         'So Desperate'
'TKEY' (Initial key)                                '10B'
'TLEN' (Length)                                     '201466'
'TPE1' (Lead performer(s)/Soloist(s))               'The Mountain Goats'
'TPE2' (Band/orchestra/accompaniment)               'The Mountain Goats'
'TPUB' (Publisher)                                  '4AD'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['rock', 'folk rock', 'indie rock']
'TXXX:lastfmtags'                                   ['indie', 'acoustic', 'lo fi', 'folk', 'pxs: loved']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.64 dB'
'TXXX:replaygain_track_peak'                        '0.795881'

========================== row from database ==========================
                                              'id'  1285184
                                            'path'  /data/Music/Bulk/00poprockelectronic/The Mountain Goats/Heretic Pride/06 So Desperate.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  201
                                           'genre'  ifs-songwriter
                                        'filesize'  4875726
                                           'mtime'  1628357235
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 06 ifs songwriter
                                      'tag_artist'  The Mountain Goats
                                     'tag_release'  Heretic Pride
                                       'tag_title'  So Desperate
                                             'bpm'  134.5
                                    'search_title'  'desperate':2 'so':1
                                   'search_artist'  'goats':3 'mountain':2 'the':1
                                  'search_release'  'heretic':1 'pride':2
                                     'search_rest'  '00poprockelectronic':1 'ifs':2 'songwriter':3
                                    'search_combo'  '00poprockelectronic':8 'desperate':2A 'goats':5B 'heretic':6C 'ifs':9 'mountain':4B 'pride':7C 'so':1A 'songwriter':10 'the':3B
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'acoustic', 'lo fi', 'folk', 'pxs: loved']
                                        'tag_date'  2008
                                     'discogstags'  ['rock', 'folk rock', 'indie rock']

============================== file details ==============================
                                           'mtime'  1628357235.124647  (2021-08-07 19:27:15)
                             'size'  4875726