======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '183'
                                          'artist'  'Fats Waller'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "110 Your socks don't match - Fats Waller (11-09-1943)"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-2', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', "
 "'Q-PIANO-4', 'q-chart-2', 'q-drums-1', 'q-other-2', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['piano', 'jazz', 'blues', 'jazz piano', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '110'
                                      'tracktotal'  ''
                                            'date'  '1943'
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-unsorted'
                                             'bpm'  '94.724'
                                             'key'  '7A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '94.724'
'TCON' (Content type, a.k.a. Genre)                 'prerock-jb-jazz-unsorted'
'TDRC' (Recording time)                             '1943'
'TIT2' (Title/songname/content description)         "110 Your socks don't match - Fats Waller (11-09-1943)"
'TKEY' (Initial key)                                '7A'
'TPE1' (Lead performer(s)/Soloist(s))               'Fats Waller'
'TRCK' (Track number/Position in set)               '110'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['piano', 'jazz', 'blues', 'jazz piano', 'swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+0.79 dB'
'TXXX:replaygain_track_peak'                        '0.618011'

========================== row from database ==========================
                                              'id'  1503400
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1943/110 Your socks don_t match - Fats Waller (11-09-1943).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  183
                                           'genre'  prerock-jb-jazz-unsorted
                                        'filesize'  2946635
                                           'mtime'  1620527439
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop don_t prerock jb jazz unsorted
                                      'tag_artist'  Fats Waller
                                     'tag_release'  None
                                       'tag_title'  110 Your socks don't match - Fats Waller (11-09-1943)
                                             'bpm'  94.724
                                    'search_title'  '09':11 '11':10 '110':1 '11091943':13 '1943':12 'don':4 'dont':6 'fats':8 'match':7 'socks':3 't':5 'waller':9 'your':2
                                   'search_artist'  'fats':1 'waller':2
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 'country':4 'don':6 'exotica':2 'jazz':1 'jb':9 'oldies':3 'prerock':8 't':7 'unsorted':10
                                    'search_combo'  '00oldiepop':20 '09':11A '11':10A '110':1A '11091943':13A '1943':12A 'country':19 'don':4A,21 'dont':6A 'exotica':17 'fats':8A,14B 'jazz':16 'jb':24 'match':7A 'oldies':18 'prerock':23 'socks':3A 't':5A,22 'unsorted':25 'waller':9A,15B 'your':2A
                                    'tag_tracknum'  110
                                      'num_images'  0
                                             'key'  7A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['piano', 'jazz', 'blues', 'jazz piano', 'swing']
                                        'tag_date'  1943
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620527438.8677442  (2021-05-09 04:30:38)
                             'size'  2946635