======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '258'
                                          'artist'  'Richard Cheese'
                                     'text_people'  ''
                                         'release'  'Tuxicity'
                                           'title'  'Smells Like Teen Spirit'
                                           'quals'  "['q-bass-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  ''
                                            'date'  '2002'
                                        'comments'  ''
                                           'genre'  'General Jazz'
                                             'bpm'  '120.2'
                                             'key'  '12A'
                                        'acoustid'  ''
rest: ''

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

'PRIV:AverageLevel:À\x17\x00\x00'                   PRIV(owner='AverageLevel', data=b'\xc0\x17\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Tuxicity'
'TBPM' (BPM (beats per minute))                     '120.2'
'TCON' (Content type, a.k.a. Genre)                 'General Jazz'
'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'Smells Like Teen Spirit'
'TKEY' (Initial key)                                '12A'
'TPE1' (Lead performer(s)/Soloist(s))               'Richard Cheese'
'TRCK' (Track number/Position in set)               '1'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '2'

========================== row from database ==========================
                                              'id'  1538677
                                            'path'  /data/Music/Other/PrevSet/[9amusing]/Richard Cheese/Smells Like Teen Spirit.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  258
                                           'genre'  General Jazz
                                        'filesize'  4145358
                                           'mtime'  1662800524
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [9amusing] General Jazz
                                      'tag_artist'  Richard Cheese
                                     'tag_release'  Tuxicity
                                       'tag_title'  Smells Like Teen Spirit
                                             'bpm'  120.2
                                    'search_title'  'like':2 'smells':1 'spirit':4 'teen':3
                                   'search_artist'  'cheese':2 'richard':1
                                  'search_release'  'tuxicity':1
                                     'search_rest'  '9amusing':2,3 'general':4 'jazz':5 'prev':6 'prevset':1 'set':7
                                    'search_combo'  '9amusing':9,10 'cheese':6B 'general':11 'jazz':12 'like':2A 'prev':13 'prevset':8 'richard':5B 'set':14 'smells':1A 'spirit':4A 'teen':3A 'tuxicity':7C
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  12A
                                           'quals'  ['q-bass-4', 'q-drums-3', 'q-other-3', 'q-piano-1', 'q-vocals-2']
                                      'lastfmtags'  []
                                        'tag_date'  2002
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800524.4016857  (2022-09-10 11:02:04)
                             'size'  4145358