======================== unified (from filesystem) ========================
                                         'bitrate'  '24.0'
                                        'duration'  '38'
                                          'artist'  '[unknown]'
                                     'text_people'  ''
                                         'release'  '[non-album tracks]'
                                           'title'  'paulus de boskabouter 1'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-OLDST-2', "
 "'Q-LOCALNESS-4', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-1', 'q-play-1', "
 "'q-chart-1', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'soundtrack-video-series'
                                             'bpm'  '90.898'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     '[non-album tracks]'
'TBPM' (BPM (beats per minute))                     '90.898'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-video-series'
'TIT2' (Title/songname/content description)         'paulus de boskabouter 1'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               '[unknown]'
'TXXX:Mp3gain_minmax'                               '096,186'
'TXXX:Mp3gain_undo'                                 '-001,-001,N'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '4'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '1'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.64 dB'
'TXXX:replaygain_track_peak'                        '0.545043'

========================== row from database ==========================
                                              'id'  794760
                                            'path'  /data/Music/Bulk/0soundtrack/TV tunes/paulus de boskabouter 1.mp3
                                         'working'  None
                                         'bitrate'  24
                                    'duration_sec'  38
                                           'genre'  soundtrack-video-series
                                        'filesize'  117244
                                           'mtime'  1621627396
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack TV tunes soundtrack video series
                                      'tag_artist'  [unknown]
                                     'tag_release'  [non-album tracks]
                                       'tag_title'  paulus de boskabouter 1
                                             'bpm'  90.898
                                    'search_title'  '1':4 'boskabouter':3 'de':2 'paulus':1
                                   'search_artist'  'unknown':1,2
                                  'search_release'  'album':2 'non':1 'nonalbum':3 'tracks':4,5
                                     'search_rest'  '0soundtrack':1 'series':6 'soundtrack':4 'tunes':3 'tv':2 'video':5
                                    'search_combo'  '0soundtrack':12 '1':4A 'album':8C 'boskabouter':3A 'de':2A 'non':7C 'nonalbum':9C 'paulus':1A 'series':17 'soundtrack':15 'tracks':10C,11C 'tunes':14 'tv':13 'unknown':5B,6B 'video':16
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-1', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['mysterious', 'unknown', 'all', 'mistagged artist', 'rock']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627395.986311  (2021-05-21 22:03:15)
                             'size'  117244