======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '145'
                                          'artist'  'Clyde McPhatter '
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "Since You've Been Gone"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['soul', 'rhythm and blues', 'doo wop', '60s', 'oldies']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1959'
                                        'comments'  ''
                                           'genre'  'prerock-doowop'
                                             'bpm'  '140.433'
                                             'key'  '8B'
                                        'acoustid'  ''
rest: ''

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

'COMM::eng'                                         '59-237 POS 38'
'COMM:ID3v1 Comment:XXX'                            '59-237 POS 38'
'TBPM' (BPM (beats per minute))                     '140.433'
'TCON' (Content type, a.k.a. Genre)                 'prerock-doowop'
'TDRC' (Recording time)                             '1959'
'TIT2' (Title/songname/content description)         "Since You've Been Gone"
'TKEY' (Initial key)                                '8B'
'TPE1' (Lead performer(s)/Soloist(s))               'Clyde McPhatter '
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['soul', 'rhythm and blues', 'doo wop', '60s', 'oldies']
'TXXX:q-bass'                                       '2'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-6.01 dB'
'TXXX:replaygain_track_peak'                        '0.932361'

========================== row from database ==========================
                                              'id'  1515423
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1959/59-237 - Clyde McPhatter - Since You_ve Been Gone.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  145
                                           'genre'  prerock-doowop
                                        'filesize'  5807721
                                           'mtime'  1621705424
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1959 59 237 You_ve prerock doowop
                                      'tag_artist'  Clyde McPhatter 
                                     'tag_release'  None
                                       'tag_title'  Since You've Been Gone
                                             'bpm'  140.433
                                    'search_title'  'been':5 'gone':6 'since':1 've':3 'you':2 'youve':4
                                   'search_artist'  'clyde':1 'mc':3 'mcphatter':2 'phatter':4
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1959':6 '237':8 '59':7 'country':4 'doowop':12 'exotica':2 'jazz':1 'oldies':3 'prerock':11 've':10 'you':9
                                    'search_combo'  '00oldiepop':15 '1959':16 '237':18 '59':17 'been':5A 'clyde':7B 'country':14 'doowop':22 'exotica':12 'gone':6A 'jazz':11 'mc':9B 'mcphatter':8B 'oldies':13 'phatter':10B 'prerock':21 'since':1A 've':3A,20 'you':2A,19 'youve':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['soul', 'rhythm and blues', 'doo wop', '60s', 'oldies']
                                        'tag_date'  1959
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621705424.3452287  (2021-05-22 19:43:44)
                             'size'  5807721