======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '121'
                                          'artist'  'G-Clefs'
                                     'text_people'  ''
                                         'release'  "The Golden Age of American Rock 'n' Roll, Vol. 5"
                                           'title'  'Ka-Ding-Dong'
                                           'quals'  ("['Q-JZFKS-2', 'Q-LOCALNESS-1', 'Q-UNU-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-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']")
                                      'lastfmtags'  "['rock and roll', 'oldies', 'doo wop', '60s', 'rnb']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '188'
                                      'tracktotal'  ''
                                            'date'  '1956'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '130.903'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     "The Golden Age of American Rock 'n' Roll, Vol. 5"
'TBPM' (BPM (beats per minute))                     '130.903'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1956'
'TIT2' (Title/songname/content description)         'Ka-Ding-Dong'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'G-Clefs'
'TPUB' (Publisher)                                  'Ace'
'TRCK' (Track number/Position in set)               '188'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['rock and roll', 'oldies', 'doo wop', '60s', 'rnb']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.35 dB'
'TXXX:replaygain_track_peak'                        '0.515951'

========================== row from database ==========================
                                              'id'  1433244
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1956/1956-188 - G-Clefs - Ka-Ding-Dong.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  121
                                           'genre'  prerock-unsorted
                                        'filesize'  4876160
                                           'mtime'  1620387582
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1956 1956 188 prerock unsorted
                                      'tag_artist'  G-Clefs
                                     'tag_release'  The Golden Age of American Rock 'n' Roll, Vol. 5
                                       'tag_title'  Ka-Ding-Dong
                                             'bpm'  130.903
                                    'search_title'  'ding':2 'dong':3 'ka':1 'kadingdong':4
                                   'search_artist'  'clefs':2 'g':1 'gclefs':3
                                  'search_release'  '5':13 'age':3 'american':5 'golden':2 'n':7,8 'of':4 'rock':6 'roll':9,10 'the':1 'vol':11,12
                                     'search_rest'  '00oldiepop':5 '188':7 '1956':6 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'unsorted':9
                                    'search_combo'  '00oldiepop':25 '188':27 '1956':26 '5':20C 'age':10C 'american':12C 'clefs':6B 'country':24 'ding':2A 'dong':3A 'exotica':22 'g':5B 'gclefs':7B 'golden':9C 'jazz':21 'ka':1A 'kadingdong':4A 'n':14C,15C 'of':11C 'oldies':23 'prerock':28 'rock':13C 'roll':16C,17C 'the':8C 'unsorted':29 'vol':18C,19C
                                    'tag_tracknum'  188
                                      'num_images'  0
                                             'key'  3A
                                           '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-2', 'q-busy-2', 'q-drums-3', 'q-syn-1', 'q-chart-1', 'q-other-3', 'q-bass-2', 'q-grit-1']
                                      'lastfmtags'  ['rock and roll', 'oldies', 'doo wop', '60s', 'rnb']
                                        'tag_date'  1956
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620387582.128603  (2021-05-07 13:39:42)
                             'size'  4876160