======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '413'
                                          'artist'  'Rare Bird'
                                     'text_people'  'Andy Curtis/Dave Kaffinetti/Fred Kelly/Steve Gould'
                                         'release'  'Progsoup 34'
                                           'title'  'Iceberg'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-2', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['art rock', 'rock', 'progressive rock', 'progressive', 'classic rock']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '1969'
                                        'comments'  ''
                                           'genre'  'rock-cppex-progressive'
                                             'bpm'  '140.823'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'MCDI' (Music CD identifier)                        MCDI(data=b'1\x001\x00+\x009\x006\x00+\x007\x009\x00F\x002\x00+\x00B\x006\x001\x005\x00+\x001\x000\x008\x003\x003\x00+\x001\x004\x005\x00A\x003\x00+\x001\x00A\x00A\x00A\x00E\x00+\x001\x00D\x00B\x005\x00A\x00+\x002\x000\x009\x002\x005\x00+\x002\x005\x004\x00E\x00F\x00+\x002\x00B\x005\x00F\x005\x00+\x003\x001\x004\x00B\x001\x00+\x003\x006\x00B\x00C\x006\x00+\x003\x00B\x00D\x004\x00E\x00+\x004\x000\x005\x001\x000\x00+\x004\x003\x00B\x00C\x005\x00+\x004\x007\x00C\x007\x00F\x00+\x004\x00B\x00B\x008\x00B\x00+\x005\x005\x003\x00A\x000\x00\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 \x001\x006\x001\x005\x004\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x001\x004\x000\x003\x004\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x002\x006\x004\x009\x001\x000\x00\x00\x00'  PRIV(owner='WM/UniqueFileIdentifier', data=b'A\x00M\x00G\x00a\x00_\x00i\x00d\x00=\x00R\x00 \x00 \x00 \x00 \x001\x006\x001\x005\x004\x00;\x00A\x00M\x00G\x00p\x00_\x00i\x00d\x00=\x00P\x00 \x00 \x00 \x00 \x001\x004\x000\x003\x004\x00;\x00A\x00M\x00G\x00t\x00_\x00i\x00d\x00=\x00T\x00 \x00 \x00 \x002\x006\x004\x009\x001\x000\x00\x00\x00')
'PRIV:WM/WMCollectionGroupID:dq×s!\x02öK³å\x93\x13ËSWÃ'  PRIV(owner='WM/WMCollectionGroupID', data=b'dq\xd7s!\x02\xf6K\xb3\xe5\x93\x13\xcbSW\xc3')
'PRIV:WM/WMCollectionID:dq×s!\x02öK³å\x93\x13ËSWÃ'  PRIV(owner='WM/WMCollectionID', data=b'dq\xd7s!\x02\xf6K\xb3\xe5\x93\x13\xcbSW\xc3')
'PRIV:WM/WMContentID:\x11VÇfã\t`M²¯¤J¡\x046\x99'    PRIV(owner='WM/WMContentID', data=b'\x11V\xc7f\xe3\t`M\xb2\xaf\xa4J\xa1\x046\x99')
'TALB' (Album/Movie/Show title)                     'Progsoup 34'
'TBPM' (BPM (beats per minute))                     '140.823'
'TCOM' (Composer)                                   'Andy Curtis/Dave Kaffinetti/Fred Kelly/Steve Gould'
'TCON' (Content type, a.k.a. Genre)                 'rock-cppex-progressive'
'TDRC' (Recording time)                             '1969'
'TIT2' (Title/songname/content description)         'Iceberg'
'TKEY' (Initial key)                                '6A'
'TLEN' (Length)                                     '414240'
'TPE1' (Lead performer(s)/Soloist(s))               'Rare Bird'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Polydor'
'TRCK' (Track number/Position in set)               '10'
'TSOA' (Album sort order)                           'Rare Bird - 01'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['art rock', 'rock', 'progressive rock', 'progressive', 'classic rock']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.56 dB'
'TXXX:replaygain_track_peak'                        '0.501444'

========================== row from database ==========================
                                              'id'  1412040
                                            'path'  /data/Music/Bulk/00popandrock-classicprogpsy/PROGSOUP/progsoup 34 (sixties prog)/1966 Rare Bird - Iceberg.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  413
                                           'genre'  rock-cppex-progressive
                                        'filesize'  16732833
                                           'mtime'  1620737209
                                   'redo_metaread'  0
                                        'rest_str'   00popandrock classicprogpsy PROGSOUP progsoup (sixties prog) 1966 rock cppex progressive
                                      'tag_artist'  Rare Bird
                                     'tag_release'  Progsoup 34
                                       'tag_title'  Iceberg
                                             'bpm'  140.823
                                    'search_title'  'iceberg':1
                                   'search_artist'  'bird':2 'rare':1
                                  'search_release'  '34':2 'progsoup':1
                                     'search_rest'  '1966':7 'classicprogpsy':1 'cppex':9 'prog':5,6 'progressive':10 'progsoup':2 'rock':8 'sixties':3,4
                                    'search_combo'  '1966':12 '34':5C 'bird':3B 'classicprogpsy':6 'cppex':14 'iceberg':1A 'prog':10,11 'progressive':15 'progsoup':4C,7 'rare':2B 'rock':13 'sixties':8,9
                                    'tag_tracknum'  10
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['art rock', 'rock', 'progressive rock', 'progressive', 'classic rock']
                                        'tag_date'  1969
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620737208.816749  (2021-05-11 14:46:48)
                             'size'  16732833