======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '178'
                                          'artist'  'Ralph Flanagan'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'A-L-B-U-Q-U-E-R-Q-U-E (1953)'
                                           'quals'  ("['Q-OLDST-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-1', "
 "'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-2']")
                                      'lastfmtags'  "['all', 'spotify', 'entschleunigen']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-pl-spelling'
                                             'bpm'  '138.797'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '138.797'
'TCON' (Content type, a.k.a. Genre)                 'set-pl-spelling'
'TIT2' (Title/songname/content description)         'A-L-B-U-Q-U-E-R-Q-U-E (1953)'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ralph Flanagan'
'TXXX:Mp3gain_minmax'                               '122,177'
'TXXX:Mp3gain_undo'                                 '+004,+004,N'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['all', 'spotify', 'entschleunigen']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '2'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.47 dB'
'TXXX:replaygain_track_peak'                        '0.471824'

========================== row from database ==========================
                                              'id'  766200
                                            'path'  /data/Music/Bulk/0playlists/0novelty themes/spelling/Ralph Flanagan - A-L-B-U-Q-U-E-R-Q-U-E (1953).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  178
                                           'genre'  set-pl-spelling
                                        'filesize'  2857964
                                           'mtime'  1620356389
                                   'redo_metaread'  0
                                        'rest_str'   0playlists 0novelty themes spelling set pl spelling
                                      'tag_artist'  Ralph Flanagan
                                     'tag_release'  None
                                       'tag_title'  A-L-B-U-Q-U-E-R-Q-U-E (1953)
                                             'bpm'  138.797
                                    'search_title'  '1953':13,14 'a':1 'albuquerque':12 'b':3 'e':7,11 'l':2 'q':5,9 'r':8 'u':4,6,10
                                   'search_artist'  'flanagan':2 'ralph':1
                                  'search_release'  
                                     'search_rest'  '0novelty':2 '0playlists':1 'pl':6 'set':5 'spelling':4 'themes':3
                                    'search_combo'  '0novelty':18 '0playlists':17 '1953':13A,14A 'a':1A 'albuquerque':12A 'b':3A 'e':7A,11A 'flanagan':16B 'l':2A 'pl':22 'q':5A,9A 'r':8A 'ralph':15B 'set':21 'spelling':20 'themes':19 'u':4A,6A,10A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-2', 'q-syn-2', 'q-chart-1', 'q-other-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['all', 'spotify', 'entschleunigen']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620356389.4375083  (2021-05-07 04:59:49)
                             'size'  2857964