======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '152'
                                          'artist'  '[Unknown]'
                                     'text_people'  ''
                                         'release'  'Songs and dances of Turkey [Folkways records \x13 FW8801; 1955]'
                                           'title'  'Classic Song (Istanbul), chorus and orchestra'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-3', 'Q-LOCALNESS-4', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  '1955'
                                        'comments'  ''
                                           'genre'  'loc-m-turkey'
                                             'bpm'  '145.580'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Songs and dances of Turkey [Folkways records \x13 FW8801; 1955]'
'TBPM' (BPM (beats per minute))                     '145.580'
'TCON' (Content type, a.k.a. Genre)                 'loc-m-turkey'
'TDRC' (Recording time)                             '1955'
'TIT2' (Title/songname/content description)         'Classic Song (Istanbul), chorus and orchestra'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               '[Unknown]'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '3'
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+9.72 dB'
'TXXX:replaygain_track_peak'                        '0.937117'

========================== row from database ==========================
                                              'id'  1396096
                                            'path'  /data/Music/Bulk/00localcharacter/00south-europe-middle-east/Songs And Dances From Turkey, 1955 [FE 8801]/15 Classic Song (Istanbul), chorus and orchestra.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  152
                                           'genre'  loc-m-turkey
                                        'filesize'  7086627
                                           'mtime'  1620526654
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter 00south europe middle east And Dances From Turkey, [FE 8801] 15 loc m turkey
                                      'tag_artist'  [Unknown]
                                     'tag_release'  Songs and dances of Turkey [Folkways records  FW8801; 1955]
                                       'tag_title'  Classic Song (Istanbul), chorus and orchestra
                                             'bpm'  145.58
                                    'search_title'  'and':6 'chorus':5 'classic':1 'istanbul':3,4 'orchestra':7 'song':2
                                   'search_artist'  'unknown':1,2
                                  'search_release'  '1955':11,12 'and':2 'dances':3 'folkways':6,7 'fw8801':9,10 'of':4 'records':8 'songs':1 'turkey':5
                                     'search_rest'  '00south':1 '8801':12,13 'and':5 'dances':6 'east':4 'europe':2 'fe':10,11 'from':7 'loc':14 'm':15 'middle':3 'turkey':8,9
                                    'search_combo'  '00south':22 '1955':20C,21C '8801':33,34 'and':6A,11C,26 'chorus':5A 'classic':1A 'dances':12C,27 'east':25 'europe':23 'fe':31,32 'folkways':15C,16C 'from':28 'fw8801':18C,19C 'istanbul':3A,4A 'loc':35 'm':36 'middle':24 'of':13C 'orchestra':7A 'records':17C 'song':2A 'songs':10C 'turkey':14C,29,30 'unknown':8B,9B
                                    'tag_tracknum'  15
                                      'num_images'  1
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['mysterious', 'unknown', 'all', 'mistagged artist', 'rock']
                                        'tag_date'  1955
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620526654.008889  (2021-05-09 04:17:34)
                             'size'  7086627