======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '148'
                                          'artist'  'Swell Maps'
                                     'text_people'  ''
                                         'release'  'Swell Maps in \'\'Jane from Occupied Europe"'
                                           'title'  'Cake Shop'
                                           'quals'  ("['Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-3', "
 "'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', "
 "'q-drums-2', 'q-other-4', 'q-piano-1', 'q-vocals-2', 'q-mixbeat-1']")
                                      'lastfmtags'  "['lovedbybeyondwithin', 'new wave', 'post punk', 'punk', 'experimental']"
                                     'discogstags'  "['rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  ''
                                            'date'  '1980'
                                        'comments'  ''
                                           'genre'  'set-th-candy'
                                             'bpm'  '135.819'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'PRIV:AverageLevel:{\x12\x00\x00'                   PRIV(owner='AverageLevel', data=b'{\x12\x00\x00')
'PRIV:PeakValue:¡o\x00\x00'                         PRIV(owner='PeakValue', data=b'\xa1o\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')
'TALB' (Album/Movie/Show title)                     'Swell Maps in \'\'Jane from Occupied Europe"'
'TBPM' (BPM (beats per minute))                     '135.819'
'TCON' (Content type, a.k.a. Genre)                 'set-th-candy'
'TDRC' (Recording time)                             '1980'
'TIT2' (Title/songname/content description)         'Cake Shop'
'TKEY' (Initial key)                                '10A'
'TPE1' (Lead performer(s)/Soloist(s))               'Swell Maps'
'TRCK' (Track number/Position in set)               '4'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'rock'
'TXXX:lastfmtags'                                   ['lovedbybeyondwithin', 'new wave', 'post punk', 'punk', 'experimental']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-1.41 dB'
'TXXX:replaygain_track_peak'                        '0.518018'

========================== row from database ==========================
                                              'id'  736034
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/sweets/Swell Maps - Cake Shop.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  148
                                           'genre'  set-th-candy
                                        'filesize'  4750409
                                           'mtime'  1620343125
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country sweets set th candy
                                      'tag_artist'  Swell Maps
                                     'tag_release'  Swell Maps in ''Jane from Occupied Europe"
                                       'tag_title'  Cake Shop
                                             'bpm'  135.819
                                    'search_title'  'cake':1 'shop':2
                                   'search_artist'  'maps':2 'swell':1
                                  'search_release'  'europe':8 'from':6 'in':3 'jane':4,5 'maps':2 'occupied':7 'swell':1
                                     'search_rest'  'candy':8 'country':4 'exotica':2 'jazz':1 'oldies':3 'set':6 'sweets':5 'th':7
                                    'search_combo'  'cake':1A 'candy':20 'country':16 'europe':12C 'exotica':14 'from':10C 'in':7C 'jane':8C,9C 'jazz':13 'maps':4B,6C 'occupied':11C 'oldies':15 'set':18 'shop':2A 'sweets':17 'swell':3B,5C 'th':19
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-4', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['lovedbybeyondwithin', 'new wave', 'post punk', 'punk', 'experimental']
                                        'tag_date'  1980
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1620343124.581171  (2021-05-07 01:18:44)
                             'size'  4750409