======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '345'
                                          'artist'  'Joni Mitchell'
                                     'text_people'  'Joni Mitchell'
                                         'release'  'Both Sides Now'
                                           'title'  'Both Sides Now'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-3', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-OLDST-3', "
 "'Q-HHRNBTT-1', 'q-syn-1', 'q-bass-4', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['acoustic', 'canadian', 'female vocalists', 'folk', 'singer songwriter']"
                                     'discogstags'  "['jazz', 'contemporary jazz', 'vocal']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  '12'
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-folk;ifs-songwriter-eos'
                                             'bpm'  '135.004'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:iTunNORM:eng'                                 (' 000003C3 000003DF 00003CA0 00004888 00043B5E 00044592 00008769 000087DA '
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'COMM:iTunSMPB:eng'                                 (' 00000000 00000210 00000708 0000000000E88A68 00000000 00000000 00000000 '
 '00000000 00000000 00000000 00000000 00000000')
'COMM:iTunes_CDDB_IDs:eng'                          '12+F3862329DE39CEF83D1797020663DE41+785129'
'TALB' (Album/Movie/Show title)                     'Both Sides Now'
'TBPM' (BPM (beats per minute))                     '135.004'
'TCOM' (Composer)                                   'Joni Mitchell'
'TCON' (Content type, a.k.a. Genre)                 ['ifs-songwriter-folk', 'ifs-songwriter-eos']
'TDRC' (Recording time)                             '2000'
'TENC' (Encoded by)                                 'iTunes v6.0.1'
'TIT2' (Title/songname/content description)         'Both Sides Now'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Joni Mitchell'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '12/12'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['jazz', 'contemporary jazz', 'vocal']
'TXXX:lastfmtags'                                   ['acoustic', 'canadian', 'female vocalists', 'folk', 'singer songwriter']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'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'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.07 dB'
'TXXX:replaygain_track_peak'                        '0.532119'

========================== row from database ==========================
                                              'id'  180217
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Joni Mitchell/2000 - Both Sides Now/12 - Both Sides Now.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  345
                                           'genre'  ifs-songwriter-folk;ifs-songwriter-eos
                                        'filesize'  11212575
                                           'mtime'  1636400355
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 2000 12 ifs songwriter folk;ifs songwriter eos
                                      'tag_artist'  Joni Mitchell
                                     'tag_release'  Both Sides Now
                                       'tag_title'  Both Sides Now
                                             'bpm'  135.004
                                    'search_title'  'both':1 'now':3 'sides':2
                                   'search_artist'  'joni':1 'mitchell':2
                                  'search_release'  'both':1 'now':3 'sides':2
                                     'search_rest'  '00singer':1 '2000':4 'eos':3 'folk':6,8 'ifs':5,7,9 'songwriter':2
                                    'search_combo'  '00singer':9 '2000':12 'both':1A,6C 'eos':11 'folk':14,16 'ifs':13,15,17 'joni':4B 'mitchell':5B 'now':3A,8C 'sides':2A,7C 'songwriter':10
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['acoustic', 'canadian', 'female vocalists', 'folk', 'singer songwriter']
                                        'tag_date'  2000
                                     'discogstags'  ['jazz', 'contemporary jazz', 'vocal']

============================== file details ==============================
                                           'mtime'  1636400355.3847754  (2021-11-08 20:39:15)
                             'size'  11212575