======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '329'
                                          'artist'  'Imelda May'
                                     'text_people'  'Imelda May'
                                         'release'  'Love Tattoo'
                                           'title'  'Knock 123'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['irish', 'jazz', 'female vocalists', 'rockabilly', 'rock', 'neo rockabilly']"
                                     'discogstags'  "['jazz', 'rock', 'blues', 'jump blues', 'smooth jazz', 'rockabilly']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2008'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '87.939'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         ['0',
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 '00015CC6 00016249',
 ' 00000000 00000210 00000828 0000000000DDFD48 00000000 005080FB 00000000 '
 '00000000 00000000 00000000 00000000 00000000']
'COMM:ID3v1 Comment:XXX'                            '0'
'COMM:iTunes_CDDB_IDs:eng'                          '12+3F198999B003D8D8CD84828BD8FDD075+10262560'
'POPM:Windows Media Player 9 Series'                POPM(email='Windows Media Player 9 Series', rating=64, count=0)
'PRIV:AverageLevel:{\r\x00\x00'                     PRIV(owner='AverageLevel', data=b'{\r\x00\x00')
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'TALB' (Album/Movie/Show title)                     'Love Tattoo'
'TBPM' (BPM (beats per minute))                     '87.939'
'TCOM' (Composer)                                   'Imelda May'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDRC' (Recording time)                             '2008'
'TENC' (Encoded by)                                 'iTunes v7.1.1.5'
'TIT2' (Title/songname/content description)         'Knock 123'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Imelda May'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['jazz', 'rock', 'blues', 'jump blues', 'smooth jazz', 'rockabilly']
'TXXX:lastfmtags'                                   ['irish', 'jazz', 'female vocalists', 'rockabilly', 'rock', 'neo rockabilly']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-2.52 dB'
'TXXX:replaygain_track_peak'                        '0.673939'

========================== row from database ==========================
                                              'id'  1266145
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Imelda May/Love Tattoo/03 Knock 123.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  329
                                           'genre'  prerock-jb-blues
                                        'filesize'  5403403
                                           'mtime'  1620402311
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 03 prerock jb blues
                                      'tag_artist'  Imelda May
                                     'tag_release'  Love Tattoo
                                       'tag_title'  Knock 123
                                             'bpm'  87.939
                                    'search_title'  '123':2 'knock':1
                                   'search_artist'  'imelda':1 'may':2
                                  'search_release'  'love':1 'tattoo':2
                                     'search_rest'  'blues':7 'country':4 'exotica':2 'jazz':1 'jb':6 'oldies':3 'prerock':5
                                    'search_combo'  '123':2A 'blues':13 'country':10 'exotica':8 'imelda':3B 'jazz':7 'jb':12 'knock':1A 'love':5C 'may':4B 'oldies':9 'prerock':11 'tattoo':6C
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-4', 'q-syn-1', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['irish', 'jazz', 'female vocalists', 'rockabilly', 'rock', 'neo rockabilly']
                                        'tag_date'  2008
                                     'discogstags'  ['jazz', 'rock', 'blues', 'jump blues', 'smooth jazz', 'rockabilly']

============================== file details ==============================
                                           'mtime'  1620402311.0320928  (2021-05-07 17:45:11)
                             'size'  5403403