======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '224'
                                          'artist'  'Sympathy Nervous'
                                     'text_people'  ''
                                         'release'  'The Hidden Tapes'
                                           'title'  'Polaroid'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', "
 "'Q-OLDST-3', '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-2']")
                                      'lastfmtags'  "['new wave', 'minimal synth', 'minimal wave', 'all', 'electronic']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '10'
                                            'date'  '2011'
                                        'comments'  ''
                                           'genre'  'electronic-we-new wave or post punk'
                                             'bpm'  '116.1'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 000001F8 000001DA 00001882 0000113B 000314C6 00036063 00005D94 00005F14 '
 '000020C1 00007B29')
'COMM:iTunPGAP:eng'                                 ['0', '']
'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 0000083D 0000000000973CB3 00000000 008915E1 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'TALB' (Album/Movie/Show title)                     'The Hidden Tapes'
'TBPM' (BPM (beats per minute))                     '116.1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-we-new wave or post punk'
'TDRC' (Recording time)                             '2011'
'TIT2' (Title/songname/content description)         'Polaroid'
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Sympathy Nervous'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '4/10'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['new wave', 'minimal synth', 'minimal wave', 'all', 'electronic']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.96 dB'
'TXXX:replaygain_track_peak'                        '0.740934'

========================== row from database ==========================
                                              'id'  654780
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Minimal Wave/[MW030] Various - The Hidden Tapes (LP, Ltd) [2011] 320Kbps/04 polaroid.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  224
                                           'genre'  electronic-we-new wave or post punk
                                        'filesize'  9039872
                                           'mtime'  1620540535
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Minimal Wave [MW030] Various (LP, Ltd) [2011] 320Kbps 04 polaroid electronic we new wave or post punk
                                      'tag_artist'  Sympathy Nervous
                                     'tag_release'  The Hidden Tapes
                                       'tag_title'  Polaroid
                                             'bpm'  116.1
                                    'search_title'  'polaroid':1
                                   'search_artist'  'nervous':2 'sympathy':1
                                  'search_release'  'hidden':2 'tapes':3 'the':1
                                     'search_rest'  '2011':10,11 '320kbps':12 'electronic':14 'lp':6,7 'ltd':8,9 'minimal':1 'mw030':3,4 'new':16 'or':17 'polaroid':13 'post':18 'punk':19 'various':5 'wave':2 'we':15
                                    'search_combo'  '2011':16,17 '320kbps':18 'electronic':20 'hidden':5C 'lp':12,13 'ltd':14,15 'minimal':7 'mw030':9,10 'nervous':3B 'new':22 'or':23 'polaroid':1A,19 'post':24 'punk':25 'sympathy':2B 'tapes':6C 'the':4C 'various':11 'wave':8 'we':21
                                    'tag_tracknum'  4
                                      'num_images'  1
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['new wave', 'minimal synth', 'minimal wave', 'all', 'electronic']
                                        'tag_date'  2011
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620540535.0870898  (2021-05-09 08:08:55)
                             'size'  9039872