======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '204'
                                          'artist'  'Boss Hoss'
                                     'text_people'  ''
                                         'release'  'Internashville Urban Hymns'
                                           'title'  'All The Things She Said'
                                           'quals'  "['q-bass-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '13'
                                      'tracktotal'  '16'
                                            'date'  '2005'
                                        'comments'  ''
                                           'genre'  'Country'
                                             'bpm'  '145.2'
                                             'key'  '4A'
                                        'acoustid'  ''
rest: ''

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

'POPM:'                                             POPM(email='', rating=102)
'PRIV:AverageLevel:¸%\x00\x00'                      PRIV(owner='AverageLevel', data=b'\xb8%\x00\x00')
'PRIV:PeakValue:ÿ\x7f\x00\x00'                      PRIV(owner='PeakValue', data=b'\xff\x7f\x00\x00')
'TALB' (Album/Movie/Show title)                     'Internashville Urban Hymns'
'TBPM' (BPM (beats per minute))                     '145.2'
'TCON' (Content type, a.k.a. Genre)                 'Country'
'TDRC' (Recording time)                             '2005'
'TIT2' (Title/songname/content description)         'All The Things She Said'
'TKEY' (Initial key)                                '4A'
'TPE1' (Lead performer(s)/Soloist(s))               'Boss Hoss'
'TRCK' (Track number/Position in set)               '13/16'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '4'

========================== row from database ==========================
                                              'id'  1538544
                                            'path'  /data/Music/Other/PrevSet/[9amusing]/Boss Hoss/All The Things She Said.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  204
                                           'genre'  Country
                                        'filesize'  4919461
                                           'mtime'  1662800534
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [9amusing] Country
                                      'tag_artist'  Boss Hoss
                                     'tag_release'  Internashville Urban Hymns
                                       'tag_title'  All The Things She Said
                                             'bpm'  145.2
                                    'search_title'  'all':1 'said':5 'she':4 'the':2 'things':3
                                   'search_artist'  'boss':1 'hoss':2
                                  'search_release'  'hymns':3 'internashville':1 'urban':2
                                     'search_rest'  '9amusing':2,3 'country':4 'prev':5 'prevset':1 'set':6
                                    'search_combo'  '9amusing':12,13 'all':1A 'boss':6B 'country':14 'hoss':7B 'hymns':10C 'internashville':8C 'prev':15 'prevset':11 'said':5A 'set':16 'she':4A 'the':2A 'things':3A 'urban':9C
                                    'tag_tracknum'  13
                                      'num_images'  0
                                             'key'  4A
                                           'quals'  ['q-bass-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-4']
                                      'lastfmtags'  []
                                        'tag_date'  2005
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800533.6613867  (2022-09-10 11:02:13)
                             'size'  4919461