<pre>
======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '314'
                                          'artist'  'The Cat Empire'
                                     'text_people'  ''
                                         'release'  'The Sun'
                                           'title'  'Rhyme &amp; Reason'
                                           'quals'  "['q-bass-4', 'q-drums-2', 'q-other-2', 'q-piano-2', 'q-vocals-2']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'Other'
                                             'bpm'  '139.9'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

======================== rawer (from filesystem) ========================<mutagen.mp3.MPEGInfo object at 0x7f95382dac70>

'APIC:'                                             type PictureType.OTHER (Other) b''<br/>                                     <img style="width:150px" src="image?fid=1538764"/>
'POPM:'                                             POPM(email='', rating=204)
'PRIV:WM/MediaClassPrimaryID:¼}`Ñ#ãâK\x86¡H¤*(D\x1e'  PRIV(owner='WM/MediaClassPrimaryID', data=b'\xbc}`\xd1#\xe3\xe2K\x86\xa1H\xa4*(D\x1e')
'PRIV:WM/MediaClassSecondaryID:\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00'  PRIV(owner='WM/MediaClassSecondaryID', data=b'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
'PRIV:www.mexp.dk:\x01\x04\x00\x00\x00\x00ska\x01\x08\x00\x00\x00\x00hip hop'  PRIV(owner='www.mexp.dk', data=b'\x01\x04\x00\x00\x00\x00ska\x01\x08\x00\x00\x00\x00hip hop')
'TALB' (Album/Movie/Show title)                     'The Sun'
'TBPM' (BPM (beats per minute))                     '139.9'
'TCON' (Content type, a.k.a. Genre)                 'Other'
'TIT2' (Title/songname/content description)         'Rhyme &amp; Reason'
'TKEY' (Initial key)                                '5A'
'TLEN' (Length)                                     '314383'
'TPE1' (Lead performer(s)/Soloist(s))               'The Cat Empire'
'TRCK' (Track number/Position in set)               '3'
'TXXX:MusicBrainz Album Id'                         '8437e2f8-c246-4c53-94b6-373c905b6c10'
'TXXX:MusicBrainz Artist Id'                        'a530492f-8806-4bd7-9c14-80c237eb92fe'
'TXXX:MusicBrainz TRM Id'                           'c1468972-9181-4741-97b7-9d8eb136b3e8'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '2'
'TXXX:q-vocals'                                     '2'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'c21d7411-74a6-46a5-b8d3-f991550e64df')

========================== row from database ==========================
                                              'id'  1538764
                                            'path'  /data/Music/Other/PrevSet/[9zdesorted]/Cat Empire/Rhyme & Reason.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  314
                                           'genre'  Other
                                        'filesize'  5034158
                                           'mtime'  1662800617
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [9zdesorted] Other
                                      'tag_artist'  The Cat Empire
                                     'tag_release'  The Sun
                                       'tag_title'  Rhyme & Reason
                                             'bpm'  139.9
                                    'search_title'  'reason':2 'rhyme':1
                                   'search_artist'  'cat':2 'empire':3 'the':1
                                  'search_release'  'sun':2 'the':1
                                     'search_rest'  '9zdesorted':2,3 'other':4 'prev':5 'prevset':1 'set':6
                                    'search_combo'  '9zdesorted':9,10 'cat':4B 'empire':5B 'other':11 'prev':12 'prevset':8 'reason':2A 'rhyme':1A 'set':13 'sun':7C 'the':3B,6C
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  5A
                                           'quals'  ['q-bass-4', 'q-drums-2', 'q-other-2', 'q-piano-2', 'q-vocals-2']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800617.4226828  (2022-09-10 11:03:37)
                             'size'  5034158