======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '247'
                                          'artist'  'ZZ Top'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Sleeping Bag'
                                           'quals'  ("['Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-OLDST-2', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-3', "
 "'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-2']")
                                      'lastfmtags'  "['blues rock', 'southern rock', 'rock', 'hard rock', 'classic rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '10'
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'rock-unsorted;set-pl-billboard'
                                             'bpm'  '112.072'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'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 \x002\x002\x007\x003\x007\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x005\x009\x002\x003\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x008\x009\x000\x004\x001\x007\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x00 \x002\x002\x007\x003\x007\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x005\x009\x002\x003\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x008\x009\x000\x004\x001\x007\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:8\x7f\x85\x98p/KK\x84ÐÇz$û^;'  PRIV(owner='WM/WMCollectionGroupID', data=b'8\x7f\x85\x98p/KK\x84\xd0\xc7z$\xfb^;')
'PRIV:WM/WMCollectionID:8\x7f\x85\x98p/KK\x84ÐÇz$û^;'  PRIV(owner='WM/WMCollectionID', data=b'8\x7f\x85\x98p/KK\x84\xd0\xc7z$\xfb^;')
'PRIV:WM/WMContentID:Â\x01Çßû\x1apL¤g\x01KWRõk'     PRIV(owner='WM/WMContentID', data=b'\xc2\x01\xc7\xdf\xfb\x1apL\xa4g\x01KWR\xf5k')
'TBPM' (BPM (beats per minute))                     '112.072'
'TCON' (Content type, a.k.a. Genre)                 ['rock-unsorted', 'set-pl-billboard']
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Sleeping Bag'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'ZZ Top'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Warner Bros.'
'TRCK' (Track number/Position in set)               '1/10'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['blues rock', 'southern rock', 'rock', 'hard rock', 'classic rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.03 dB'
'TXXX:replaygain_track_peak'                        '0.951558'

========================== row from database ==========================
                                              'id'  1360218
                                            'path'  /data/Music/Bulk/00poprockelectronic/1985 complete/324-A ZZ Top - Sleeping Bag (single version).mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  247
                                           'genre'  rock-unsorted;set-pl-billboard
                                        'filesize'  10403896
                                           'mtime'  1620389107
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 1985 complete 324 A (single version) rock unsorted;set pl billboard
                                      'tag_artist'  ZZ Top
                                     'tag_release'  None
                                       'tag_title'  Sleeping Bag
                                             'bpm'  112.072
                                    'search_title'  'bag':2 'sleeping':1
                                   'search_artist'  'top':2 'zz':1
                                  'search_release'  
                                     'search_rest'  '00poprockelectronic':1 '1985':2 '324':4 'a':5 'billboard':16 'complete':3 'pl':15 'rock':10 'set':12,14 'single':6,7 'unsorted':11,13 'version':8,9
                                    'search_combo'  '00poprockelectronic':5 '1985':6 '324':8 'a':9 'bag':2A 'billboard':20 'complete':7 'pl':19 'rock':14 'set':16,18 'single':10,11 'sleeping':1A 'top':4B 'unsorted':15,17 'version':12,13 'zz':3B
                                    'tag_tracknum'  1
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-3', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['blues rock', 'southern rock', 'rock', 'hard rock', 'classic rock']
                                        'tag_date'  1985
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620389106.5946307  (2021-05-07 14:05:06)
                             'size'  10403896