======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '141'
                                          'artist'  '101 Strings Orchestra'
                                     'text_people'  'Traditional'
                                         'release'  '20 Best Of Celtic Moods'
                                           'title'  "Ye Banks & Braes O'Bonny Doon"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-UNU-1', 'Q-SYN-1', 'Q-BUSY-3', 'Q-GRIT-1', 'Q-CHART-2', 'Q-MIXBEAT-1', "
 "'q-bass-1', 'q-play-2', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1']")
                                      'lastfmtags'  "['instrumental', 'edhits', 'myhits', 'classical', 'easy listening']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-easy listening'
                                             'bpm'  '135.9'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV::'                                            PRIV(owner='', data=b'')
'PRIV:AverageLevel:{\x14\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x14\x00\x00')
'PRIV:PeakValue:¡\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xa1\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\x006\x003\x004\x000\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x001\x008\x008\x009\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x006\x008\x002\x001\x005\x001\x005\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x006\x007\x006\x003\x004\x000\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x00 \x001\x008\x008\x009\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x006\x008\x002\x001\x005\x001\x005\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:õuyï\x9e¦£K\x8c\x8a1®u\té#'  PRIV(owner='WM/WMCollectionGroupID', data=b'\xf5uy\xef\x9e\xa6\xa3K\x8c\x8a1\xaeu\t\xe9#')
'PRIV:WM/WMCollectionID:õuyï\x9e¦£K\x8c\x8a1®u\té#'  PRIV(owner='WM/WMCollectionID', data=b'\xf5uy\xef\x9e\xa6\xa3K\x8c\x8a1\xaeu\t\xe9#')
'PRIV:WM/WMContentID:\x1b\x0e¤âÚl/H\x8f\x10¥\x9f\x82¸eí'  PRIV(owner='WM/WMContentID', data=b'\x1b\x0e\xa4\xe2\xdal/H\x8f\x10\xa5\x9f\x82\xb8e\xed')
'TALB' (Album/Movie/Show title)                     '20 Best Of Celtic Moods'
'TBPM' (BPM (beats per minute))                     '135.9'
'TCOM' (Composer)                                   'Traditional'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-easy listening'
'TDRC' (Recording time)                             '2004'
'TIT2' (Title/songname/content description)         "Ye Banks & Braes O'Bonny Doon"
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               '101 Strings Orchestra'
'TPE2' (Band/orchestra/accompaniment)               '101 Strings Orchestra'
'TPUB' (Publisher)                                  'Madacy'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-BUSY'                                       '3'
'TXXX:Q-CHART'                                      '2'
'TXXX:Q-GRIT'                                       '1'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-MIXBEAT'                                    '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-SYN'                                        '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['instrumental', 'edhits', 'myhits', 'classical', 'easy listening']
'TXXX:q-bass'                                       '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.80 dB'
'TXXX:replaygain_track_peak'                        '0.422243'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'10b98959-cfa6-45a6-825d-c78610f0d68c')

========================== row from database ==========================
                                              'id'  1520203
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/The 101 Strings Orchestra/2004 - 20 Best Of Celtic Moods/07 - Ye Banks & Braes O_Bonny Doon.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  141
                                           'genre'  electronic-generic or radio-easy listening
                                        'filesize'  3443978
                                           'mtime'  1621705582
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country The 2004 07 O_Bonny electronic generic or radio easy listening
                                      'tag_artist'  101 Strings Orchestra
                                     'tag_release'  20 Best Of Celtic Moods
                                       'tag_title'  Ye Banks & Braes O'Bonny Doon
                                             'bpm'  135.9
                                    'search_title'  'banks':2 'bonny':5 'braes':3 'doon':7 'o':4 'obonny':6 'ye':1
                                   'search_artist'  '101':1 'orchestra':3 'strings':2
                                  'search_release'  '20':1 'best':2 'celtic':4 'moods':5 'of':3
                                     'search_rest'  '2004':6 'bonny':8 'country':4 'easy':13 'electronic':9 'exotica':2 'generic':10 'jazz':1 'listening':14 'o':7 'oldies':3 'or':11 'radio':12 'the':5
                                    'search_combo'  '101':8B '20':11C '2004':21 'banks':2A 'best':12C 'bonny':5A,23 'braes':3A 'celtic':14C 'country':19 'doon':7A 'easy':28 'electronic':24 'exotica':17 'generic':25 'jazz':16 'listening':29 'moods':15C 'o':4A,22 'obonny':6A 'of':13C 'oldies':18 'or':26 'orchestra':10B 'radio':27 'strings':9B 'the':20 'ye':1A
                                    'tag_tracknum'  7
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'Q-MIXBEAT-1', 'q-play-2', 'Q-OLDST-3', 'Q-GRIT-1', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-CHART-2', 'q-drums-1', 'Q-SYN-1', 'q-other-4', 'Q-BUSY-3', 'Q-HAP-3', 'q-bass-1']
                                      'lastfmtags'  ['instrumental', 'edhits', 'myhits', 'classical', 'easy listening']
                                        'tag_date'  2004
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621705581.541526  (2021-05-22 19:46:21)
                             'size'  3443978