======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '314'
                                          'artist'  'Ramsey Lewis'
                                     'text_people'  'Byron Gregory'
                                         'release'  'Love Notes'
                                           'title'  'Messenger'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-3', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', 'Q-UNU-1', "
 "'Q-OLDST-2', 'Q-PLAY-2', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-4', 'q-other-3', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['fip', 'jazz', 'soul', 'piano', 'funk', '7soul']"
                                     'discogstags'  "['jazz', 'soul-jazz', 'jazz-funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  '7'
                                            'date'  '1977'
                                        'comments'  ''
                                           'genre'  'funk or soul'
                                             'bpm'  '104.985'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 000002B9 00000290 0000403D 0000814B 0001DEE9 000457D6 00007F94 00007E13 '
 '0003AD7F 0003AD7F')
'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 \x001\x003\x003\x007\x002\x004\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x002\x007\x005\x002\x004\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x008\x004\x000\x002\x008\x000\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x001\x003\x003\x007\x002\x004\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x002\x007\x005\x002\x004\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x008\x004\x000\x002\x008\x000\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:æ9§\x90,®\x06E\x85l\x80\x1bÇgð\x1d'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xe69\xa7\x90,\xae\x06E\x85l\x80\x1b\xc7g\xf0\x1d')
'PRIV:WM/WMCollectionID:æ9§\x90,®\x06E\x85l\x80\x1bÇgð\x1d'  PRIV(owner='WM/WMCollectionID', data=b'\xe69\xa7\x90,\xae\x06E\x85l\x80\x1b\xc7g\xf0\x1d')
'PRIV:WM/WMContentID:\x89¢¾ËÓ?®K¡0¿§£0\x8cè'        PRIV(owner='WM/WMContentID', data=b'\x89\xa2\xbe\xcb\xd3?\xaeK\xa10\xbf\xa7\xa30\x8c\xe8')
'TALB' (Album/Movie/Show title)                     'Love Notes'
'TBPM' (BPM (beats per minute))                     '104.985'
'TCOM' (Composer)                                   'Byron Gregory'
'TCON' (Content type, a.k.a. Genre)                 'funk or soul'
'TDRC' (Recording time)                             '1977'
'TIT2' (Title/songname/content description)         'Messenger'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ramsey Lewis'
'TPE2' (Band/orchestra/accompaniment)               'Ramsey Lewis'
'TPUB' (Publisher)                                  'CBS'
'TRCK' (Track number/Position in set)               '6/7'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['jazz', 'soul-jazz', 'jazz-funk']
'TXXX:lastfmtags'                                   ['fip', 'jazz', 'soul', 'piano', 'funk', '7soul']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+1.52 dB'
'TXXX:replaygain_track_peak'                        '0.838143'

========================== row from database ==========================
                                              'id'  1309784
                                            'path'  /data/Music/Bulk/00poprockelectronic/Unsorted/[loose files]/06 messenger.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  314
                                           'genre'  funk or soul
                                        'filesize'  12596602
                                           'mtime'  1628357941
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Unsorted [loose files] 06 messenger funk or soul
                                      'tag_artist'  Ramsey Lewis
                                     'tag_release'  Love Notes
                                       'tag_title'  Messenger
                                             'bpm'  104.985
                                    'search_title'  'messenger':1
                                   'search_artist'  'lewis':2 'ramsey':1
                                  'search_release'  'love':1 'notes':2
                                     'search_rest'  '00poprockelectronic':1 'files':5,6 'funk':8 'loose':3,4 'messenger':7 'or':9 'soul':10 'unsorted':2
                                    'search_combo'  '00poprockelectronic':6 'files':10,11 'funk':13 'lewis':3B 'loose':8,9 'love':4C 'messenger':1A,12 'notes':5C 'or':14 'ramsey':2B 'soul':15 'unsorted':7
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['fip', 'jazz', 'soul', 'piano', 'funk', '7soul']
                                        'tag_date'  1977
                                     'discogstags'  ['jazz', 'soul-jazz', 'jazz-funk']

============================== file details ==============================
                                           'mtime'  1628357941.3537178  (2021-08-07 19:39:01)
                             'size'  12596602