======================== unified (from filesystem) ========================
                                         'bitrate'  '248.165'
                                        'duration'  '249'
                                          'artist'  'The Weeknd'
                                     'text_people'  ''
                                         'release'  'Beauty Behind The Madness'
                                           'title'  'Often'
                                           'quals'  ("['Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-2', 'Q-OLDST-3', 'Q-UNU-1', "
 "'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-3', "
 "'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-3', 'q-mixbeat-3']")
                                      'lastfmtags'  "['rnb', 'dubstep', 'electronic', 'prog rnb', 'canadian']"
                                     'discogstags'  "['contemporary r&b', 'soul', 'hip hop', 'funk / soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '14'
                                            'date'  '2015'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-dance'
                                             'bpm'  '134.645'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:http://www.cdtag.com:\x02\x00ø%B\x00'         PRIV(owner='http://www.cdtag.com', data=b'\x02\x00\xf8%B\x00')
'TALB' (Album/Movie/Show title)                     'Beauty Behind The Madness'
'TBPM' (BPM (beats per minute))                     '134.645'
'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-dance'
'TDRC' (Recording time)                             '2015-00-00'
'TIT2' (Title/songname/content description)         'Often'
'TKEY' (Initial key)                                '7A'
'TLAN' (Language(s))                                'eng'
'TLEN' (Length)                                     '249106'
'TPE1' (Lead performer(s)/Soloist(s))               'The Weeknd'
'TPE2' (Band/orchestra/accompaniment)               'The Weeknd'
'TPUB' (Publisher)                                  'Republic'
'TRCK' (Track number/Position in set)               '4/14'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME 3.98.4 -V 0'
'TXXX:Q-HHRNBTT'                                    '2'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:Release type'                                 'eleas'
'TXXX:Rip date'                                     'ip date'
'TXXX:Source'                                       'ourc'
'TXXX:discogstags'                                  ['contemporary r&b', 'soul', 'hip hop', 'funk / soul']
'TXXX:lastfmtags'                                   ['rnb', 'dubstep', 'electronic', 'prog rnb', 'canadian']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-1.92 dB'
'TXXX:replaygain_track_peak'                        '0.528135'

========================== row from database ==========================
                                              'id'  1355312
                                            'path'  /data/Music/Bulk/00poprockelectronic/2016/The Weeknd - Often.mp3
                                         'working'  None
                                         'bitrate'  248
                                    'duration_sec'  249
                                           'genre'  electronic-generic or radio-dance
                                        'filesize'  7731610
                                           'mtime'  1620566347
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 2016 electronic generic or radio dance
                                      'tag_artist'  The Weeknd
                                     'tag_release'  Beauty Behind The Madness
                                       'tag_title'  Often
                                             'bpm'  134.645
                                    'search_title'  'often':1
                                   'search_artist'  'the':1 'weeknd':2
                                  'search_release'  'beauty':1 'behind':2 'madness':4 'the':3
                                     'search_rest'  '00poprockelectronic':1 '2016':2 'dance':7 'electronic':3 'generic':4 'or':5 'radio':6
                                    'search_combo'  '00poprockelectronic':8 '2016':9 'beauty':4C 'behind':5C 'dance':14 'electronic':10 'generic':11 'madness':7C 'often':1A 'or':12 'radio':13 'the':2B,6C 'weeknd':3B
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-2', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-3', 'q-other-1', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['rnb', 'dubstep', 'electronic', 'prog rnb', 'canadian']
                                        'tag_date'  2015
                                     'discogstags'  ['contemporary r&b', 'soul', 'hip hop', 'funk / soul']

============================== file details ==============================
                                           'mtime'  1620566346.6068037  (2021-05-09 15:19:06)
                             'size'  7731610