======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '344'
                                          'artist'  'Duese'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Nackig (Dj Tomcraft Remix)'
                                           'quals'  "['q-bass-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'Other'
                                             'bpm'  '136.2'
                                             'key'  'A m'  (8A)
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=153)
'POPM:\x01ÿþ3'                                      POPM(email='\x01ÿþ3', rating=0, count=0)
'PRIV:AverageLevel:N\x0e\x00\x00'                   PRIV(owner='AverageLevel', data=b'N\x0e\x00\x00')
'PRIV:PeakValue:jL\x00\x00'                         PRIV(owner='PeakValue', data=b'jL\x00\x00')
'PRIV:www.mexp.dk:\x01\x0b\x00\x00\x00\x00Good Stuff'  PRIV(owner='www.mexp.dk', data=b'\x01\x0b\x00\x00\x00\x00Good Stuff')
'TBPM' (BPM (beats per minute))                     '136.2'
'TCON' (Content type, a.k.a. Genre)                 'Other'
'TIT2' (Title/songname/content description)         'Nackig (Dj Tomcraft Remix)'
'TKEY' (Initial key)                                'A m'
'TPE1' (Lead performer(s)/Soloist(s))               'Duese'
'TXXX:q-bass'                                       '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'

========================== row from database ==========================
                                              'id'  1538199
                                            'path'  /data/Music/Other/PrevSet/[1electro-harder]/Duese - Nackig (DJ Tomcraft Remix).mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  344
                                           'genre'  Other
                                        'filesize'  5509120
                                           'mtime'  1657695025
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [1electro harder] (DJ Other
                                      'tag_artist'  Duese
                                     'tag_release'  None
                                       'tag_title'  Nackig (Dj Tomcraft Remix)
                                             'bpm'  136.2
                                    'search_title'  'dj':2,3 'nackig':1 'remix':5,6 'tomcraft':4
                                   'search_artist'  'duese':1
                                  'search_release'  
                                     'search_rest'  '1electro':2,3 'dj':6,7 'harder':4,5 'other':8 'prev':9 'prevset':1 'set':10
                                    'search_combo'  '1electro':9,10 'dj':2A,3A,13,14 'duese':7B 'harder':11,12 'nackig':1A 'other':15 'prev':16 'prevset':8 'remix':5A,6A 'set':17 'tomcraft':4A
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  A m
                                           'quals'  ['q-bass-3', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1657695024.599874  (2022-07-13 08:50:24)
                             'size'  5509120