======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '155'
                                          'artist'  'Jan Garber'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  "If You Don't Want Me"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-2', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['spotify', '1920s', 'yay', 'all', 'swing']"
                                     'discogstags'  "['jazz']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1924'
                                        'comments'  ''
                                           'genre'  'prerock-swing'
                                             'bpm'  '95.664'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '95.664'
'TCON' (Content type, a.k.a. Genre)                 'prerock-swing'
'TDRC' (Recording time)                             '1924'
'TIT2' (Title/songname/content description)         "If You Don't Want Me"
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jan Garber'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  'jazz'
'TXXX:lastfmtags'                                   ['spotify', '1920s', 'yay', 'all', 'swing']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+2.08 dB'
'TXXX:replaygain_track_peak'                        '0.506034'

========================== row from database ==========================
                                              'id'  1515467
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1924/Jan Garber - If You Don_t Want Me 23-12-1924.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  155
                                           'genre'  prerock-swing
                                        'filesize'  3116899
                                           'mtime'  1620559880
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1924 Don_t 23 12 1924 prerock swing
                                      'tag_artist'  Jan Garber
                                     'tag_release'  None
                                       'tag_title'  If You Don't Want Me
                                             'bpm'  95.664
                                    'search_title'  'don':3 'dont':5 'if':1 'me':7 't':4 'want':6 'you':2
                                   'search_artist'  'garber':2 'jan':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1924':6 '23':9 'country':4 'don':7 'exotica':2 'jazz':1 'oldies':3 'prerock':10 'swing':11 't':8
                                    'search_combo'  '00oldiepop':14 '1924':15 '23':18 'country':13 'don':3A,16 'dont':5A 'exotica':11 'garber':9B 'if':1A 'jan':8B 'jazz':10 'me':7A 'oldies':12 'prerock':19 'swing':20 't':4A,17 'want':6A 'you':2A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', '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-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  ['spotify', '1920s', 'yay', 'all', 'swing']
                                        'tag_date'  1924
                                     'discogstags'  ['jazz']

============================== file details ==============================
                                           'mtime'  1620559880.097507  (2021-05-09 13:31:20)
                             'size'  3116899