======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '178'
                                          'artist'  'charley patton'
                                     'text_people'  ''
                                         'release'  'The Roots Of Canned Heat'
                                           'title'  'pony blues'
                                           'quals'  ("['Q-HAP-2', 'Q-JZFKS-3', 'Q-LOCALNESS-3', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['country blues', 'blues', 'delta blues', 'folk', 'classic blues']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '10'
                                      'tracktotal'  ''
                                            'date'  '2000'
                                        'comments'  ''
                                           'genre'  'prerock-jb-blues'
                                             'bpm'  '116.857'
                                             'key'  '7B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Roots Of Canned Heat'
'TBPM' (BPM (beats per minute))                     '116.857'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-blues'
'TDRC' (Recording time)                             '2000'
'TIT2' (Title/songname/content description)         'pony blues'
'TKEY' (Initial key)                                '7B'
'TPE1' (Lead performer(s)/Soloist(s))               'charley patton'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['country blues', 'blues', 'delta blues', 'folk', 'classic blues']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.28 dB'
'TXXX:replaygain_track_peak'                        '0.515404'
'TXXX:tracknum'                                     '10'

========================== row from database ==========================
                                              'id'  678248
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/the roots of canned heat - va/10_charley patton - pony blues .mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  178
                                           'genre'  prerock-jb-blues
                                        'filesize'  7152134
                                           'mtime'  1620402833
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country the roots of canned heat va 10_charley prerock jb
                                      'tag_artist'  charley patton
                                     'tag_release'  The Roots Of Canned Heat
                                       'tag_title'  pony blues
                                             'bpm'  116.857
                                    'search_title'  'blues':2 'pony':1
                                   'search_artist'  'charley':1 'patton':2
                                  'search_release'  'canned':4 'heat':5 'of':3 'roots':2 'the':1
                                     'search_rest'  '10':11 'canned':8 'charley':12 'country':4 'exotica':2 'heat':9 'jazz':1 'jb':14 'of':7 'oldies':3 'prerock':13 'roots':6 'the':5 'va':10
                                    'search_combo'  '10':20 'blues':2A 'canned':8C,17 'charley':3B,21 'country':13 'exotica':11 'heat':9C,18 'jazz':10 'jb':23 'of':7C,16 'oldies':12 'patton':4B 'pony':1A 'prerock':22 'roots':6C,15 'the':5C,14 'va':19
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['country blues', 'blues', 'delta blues', 'folk', 'classic blues']
                                        'tag_date'  2000
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620402833.116833  (2021-05-07 17:53:53)
                             'size'  7152134