======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '165'
                                          'artist'  'Tom Waits'
                                     'text_people'  'Tom Waits'
                                         'release'  'Rain Dogs'
                                           'title'  'Big Black Mariah'
                                           'quals'  ("['Q-JZFKS-2', 'Q-HAP-2', 'Q-LOCALNESS-2', 'Q-UNU-2', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-4', 'q-drums-4', 'q-other-2', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']"
                                     'discogstags'  "['rock', 'blues', 'blues rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '6'
                                      'tracktotal'  ''
                                            'date'  '1985'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-experimental'
                                             'bpm'  '126.2'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x003\x00+\x00B\x007\x00+\x003\x001\x004\x007\x00+\x007\x004\x004\x00A\x00+\x009\x003\x008\x00F\x00+\x00C\x004\x008\x00E\x00+\x00F\x006\x008\x00B\x00+\x001\x002\x006\x00E\x00C\x00+\x001\x005\x003\x009\x000\x00+\x001\x008\x000\x00A\x001\x00+\x001\x00C\x005\x00B\x00E\x00+\x001\x00F\x009\x00A\x005\x00+\x002\x000\x00C\x001\x005\x00+\x002\x002\x00E\x004\x00B\x00+\x002\x007\x00F\x00C\x007\x00+\x002\x00A\x00A\x003\x00A\x00+\x002\x00F\x006\x004\x00B\x00+\x003\x002\x00D\x003\x002\x00+\x003\x007\x001\x00C\x00C\x00+\x003\x008\x006\x000\x00D\x00+\x003\x00B\x006\x00E\x001\x00\x00\x00')
'PRIV:AverageLevel:{\x10\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x10\x00\x00')
'PRIV:PeakValue:!c\x00\x00'                         PRIV(owner='PeakValue', data=b'!c\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 \x00 \x002\x001\x003\x008\x000\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x005\x007\x007\x008\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x008\x003\x004\x000\x005\x003\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x00 \x002\x001\x003\x008\x000\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x005\x007\x007\x008\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x008\x003\x004\x000\x005\x003\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:P\x0c\xad\x11+\x89ºA®Ð\x80\x00Õ\x8ar\x17'  PRIV(owner='WM/WMCollectionGroupID', data=b'P\x0c\xad\x11+\x89\xbaA\xae\xd0\x80\x00\xd5\x8ar\x17')
'PRIV:WM/WMCollectionID:P\x0c\xad\x11+\x89ºA®Ð\x80\x00Õ\x8ar\x17'  PRIV(owner='WM/WMCollectionID', data=b'P\x0c\xad\x11+\x89\xbaA\xae\xd0\x80\x00\xd5\x8ar\x17')
'PRIV:WM/WMContentID:c\x97\x8493`\x90F¤¿®\x89ñ1çÙ'  PRIV(owner='WM/WMContentID', data=b'c\x97\x8493`\x90F\xa4\xbf\xae\x89\xf11\xe7\xd9')
'TALB' (Album/Movie/Show title)                     'Rain Dogs'
'TBPM' (BPM (beats per minute))                     '126.2'
'TCOM' (Composer)                                   'Tom Waits'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-experimental'
'TDRC' (Recording time)                             '1985'
'TIT2' (Title/songname/content description)         'Big Black Mariah'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '165133'
'TPE1' (Lead performer(s)/Soloist(s))               'Tom Waits'
'TPE2' (Band/orchestra/accompaniment)               'Tom Waits'
'TPUB' (Publisher)                                  'Island'
'TRCK' (Track number/Position in set)               '6'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['rock', 'blues', 'blues rock']
'TXXX:lastfmtags'                                   ['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.69 dB'
'TXXX:replaygain_track_peak'                        '0.650903'

========================== row from database ==========================
                                              'id'  1293693
                                            'path'  /data/Music/Bulk/00poprockelectronic/TomWaits/Rain Dogs/06-Big Black Mariah.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  165
                                           'genre'  ifs-songwriter-experimental
                                        'filesize'  6622034
                                           'mtime'  1639508235
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic TomWaits 06 ifs songwriter experimental
                                      'tag_artist'  Tom Waits
                                     'tag_release'  Rain Dogs
                                       'tag_title'  Big Black Mariah
                                             'bpm'  126.2
                                    'search_title'  'big':1 'black':2 'mariah':3
                                   'search_artist'  'tom':1 'waits':2
                                  'search_release'  'dogs':2 'rain':1
                                     'search_rest'  '00poprockelectronic':1 'experimental':5 'ifs':3 'songwriter':4 'tom':6 'tomwaits':2 'waits':7
                                    'search_combo'  '00poprockelectronic':8 'big':1A 'black':2A 'dogs':7C 'experimental':12 'ifs':10 'mariah':3A 'rain':6C 'songwriter':11 'tom':4B,13 'tomwaits':9 'waits':5B,14
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-4', 'q-syn-2', 'q-chart-4', 'q-other-2', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['blues', 'rock', 'alternative', 'experimental', 'singer songwriter']
                                        'tag_date'  1985
                                     'discogstags'  ['rock', 'blues', 'blues rock']

============================== file details ==============================
                                           'mtime'  1639508234.971687  (2021-12-14 19:57:14)
                             'size'  6622034