======================== unified (from filesystem) ========================
                                         'bitrate'  '181.308'
                                        'duration'  '567'
                                          'artist'  'Biosphere'
                                     'text_people'  ''
                                         'release'  'Bio Sphere'
                                           'title'  'Spaece'
                                           'quals'  "['q-bass-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-1']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '2004'
                                        'comments'  ''
                                           'genre'  'im-calmer'
                                             'bpm'  '137.1'
                                             'key'  '10A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Bio Sphere'
'TBPM' (BPM (beats per minute))                     '137.1'
'TCON' (Content type, a.k.a. Genre)                 'im-calmer'
'TDRC' (Recording time)                             '2004'
'TENC' (Encoded by)                                 'LAME'
'TIT2' (Title/songname/content description)         'Spaece'
'TKEY' (Initial key)                                '10A'
'TLAN' (Language(s))                                'Russian'
'TPE1' (Lead performer(s)/Soloist(s))               'Biosphere'
'TRCK' (Track number/Position in set)               '3'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '2'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.58 dB'
'TXXX:replaygain_track_peak'                        '0.828188'
'WXXX:'                                             WXXX(encoding=<Encoding.LATIN1: 0>, desc='', url='http://www.notam02.no/~geirje/')

========================== row from database ==========================
                                              'id'  1537219
                                            'path'  /data/Music/Other/F3/Biosphere/2004 - Bio Sphere/03-spaece-tbs.mp3
                                         'working'  None
                                         'bitrate'  181
                                    'duration_sec'  567
                                           'genre'  im-calmer
                                        'filesize'  12859693
                                           'mtime'  1662800251
                                   'redo_metaread'  0
                                        'rest_str'   F3 2004 03 spaece tbs im calmer
                                      'tag_artist'  Biosphere
                                     'tag_release'  Bio Sphere
                                       'tag_title'  Spaece
                                             'bpm'  137.1
                                    'search_title'  'spaece':1
                                   'search_artist'  'biosphere':1
                                  'search_release'  'bio':1 'sphere':2
                                     'search_rest'  '2004':2 'calmer':6 'f3':1 'im':5 'spaece':3 'tbs':4
                                    'search_combo'  '2004':6 'bio':3C 'biosphere':2B 'calmer':10 'f3':5 'im':9 'spaece':1A,7 'sphere':4C 'tbs':8
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['q-bass-4', 'q-drums-2', 'q-other-3', 'q-piano-1', 'q-vocals-1']
                                      'lastfmtags'  []
                                        'tag_date'  2004
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800251.0345097  (2022-09-10 10:57:31)
                             'size'  12859693