======================== unified (from filesystem) ========================
                                         'bitrate'  '204.55'
                                        'duration'  '346'
                                          'artist'  'Grizzly Bear'
                                     'text_people'  ''
                                         'release'  'Yellow House'
                                           'title'  'On a Neck, On a Spit'
                                           'quals'  ("['Q-HAP-2', 'Q-OLDST-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['indie', 'lo fi', 'folk', 'experimental', 'freak folk']"
                                     'discogstags'  "['rock', 'folk rock', 'avantgarde']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  '10'
                                            'date'  '2006'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-experimental'
                                             'bpm'  '94.2'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:CDDB Disc ID:XXX'                             '890BBD0A'
'PRIV:http://www.cdtag.com:\x02\x00Ì3à\x00'         PRIV(owner='http://www.cdtag.com', data=b'\x02\x00\xcc3\xe0\x00')
'TALB' (Album/Movie/Show title)                     'Yellow House'
'TBPM' (BPM (beats per minute))                     '94.2'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-experimental'
'TDRC' (Recording time)                             '2006-09-05'
'TIT2' (Title/songname/content description)         'On a Neck, On a Spit'
'TKEY' (Initial key)                                '10A'
'TLAN' (Language(s))                                'eng'
'TPE1' (Lead performer(s)/Soloist(s))               'Grizzly Bear'
'TPUB' (Publisher)                                  'Warp Records'
'TRCK' (Track number/Position in set)               '8/10'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME'
'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:Release type'                                 'Advance'
'TXXX:Rip date'                                     '2006-06-25'
'TXXX:Ripping tool'                                 'EAC'
'TXXX:Source'                                       'CD'
'TXXX:discogstags'                                  ['rock', 'folk rock', 'avantgarde']
'TXXX:lastfmtags'                                   ['indie', 'lo fi', 'folk', 'experimental', 'freak folk']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.10 dB'
'TXXX:replaygain_track_peak'                        '0.450948'

========================== row from database ==========================
                                              'id'  1265531
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Grizzly Bear/Yellow House/08-grizzly_bear-on_a_neck_on_a_spit.mp3
                                         'working'  None
                                         'bitrate'  204
                                    'duration_sec'  346
                                           'genre'  ifs-songwriter-experimental
                                        'filesize'  9090379
                                           'mtime'  1636400815
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 08 grizzly_bear on_a_neck_on_a_spit ifs songwriter experimental
                                      'tag_artist'  Grizzly Bear
                                     'tag_release'  Yellow House
                                       'tag_title'  On a Neck, On a Spit
                                             'bpm'  94.2
                                    'search_title'  'a':2 'neck':3,4 'on':1 'spit':5
                                   'search_artist'  'bear':2 'grizzly':1
                                  'search_release'  'house':2 'yellow':1
                                     'search_rest'  '00singer':1 'a':7,10 'bear':5 'eos':3 'experimental':13 'grizzly':4 'ifs':12 'neck':8 'on':6,9 'songwriter':2 'spit':11
                                    'search_combo'  '00singer':10 'a':2A,16,19 'bear':7B,14 'eos':12 'experimental':22 'grizzly':6B,13 'house':9C 'ifs':21 'neck':3A,4A,17 'on':1A,15,18 'songwriter':11 'spit':5A,20 'yellow':8C
                                    'tag_tracknum'  8
                                      '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-3', 'q-syn-2', 'q-chart-4', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'lo fi', 'folk', 'experimental', 'freak folk']
                                        'tag_date'  2006
                                     'discogstags'  ['rock', 'folk rock', 'avantgarde']

============================== file details ==============================
                                           'mtime'  1636400815.4635565  (2021-11-08 20:46:55)
                             'size'  9090379