======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '312'
                                          'artist'  'Biosphere'
                                     'text_people'  ''
                                         'release'  'Microgravity'
                                           'title'  'Microgravity'
                                           'quals'  "['q-bass-4', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-1']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '1'
                                      'tracktotal'  '9'
                                            'date'  '1992'
                                        'comments'  ''
                                           'genre'  'im-calmer'
                                             'bpm'  '109.9'
                                             'key'  '5A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Microgravity'
'TBPM' (BPM (beats per minute))                     '109.9'
'TCON' (Content type, a.k.a. Genre)                 'im-calmer'
'TDOR' (Original release time)                      '1991'
'TDRC' (Recording time)                             '1992'
'TIT2' (Title/songname/content description)         'Microgravity'
'TKEY' (Initial key)                                '5A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Biosphere'
'TPE2' (Band/orchestra/accompaniment)               'Biosphere'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Apollo'
'TRCK' (Track number/Position in set)               '1/9'
'TSO2'                                              'Biosphere'
'TSOP' (Performer sort order)                       'Biosphere'
'TSRC' (ISRC (international standard recording code))  'NOBIP0702010'
'TXXX:ASIN'                                         'B000006ZC5'
'TXXX:BARCODE'                                      '5411659169218'
'TXXX:CATALOGNUMBER'                                'AMBCD 3921'
'TXXX:MusicBrainz Album Artist Id'                  'a5ee1ebe-a645-45d2-8319-d101fe62e581'
'TXXX:MusicBrainz Album Id'                         '18e02e66-de94-36a4-ac56-9584b0f075ba'
'TXXX:MusicBrainz Album Release Country'            'BE'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'a5ee1ebe-a645-45d2-8319-d101fe62e581'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'a544a6a3-60af-4e8f-a9a5-3b5da37201a9')

========================== row from database ==========================
                                              'id'  1537152
                                            'path'  /data/Music/Other/F3/Biosphere/1992 - microgravity/01 - Microgravity.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  312
                                           'genre'  im-calmer
                                        'filesize'  12505434
                                           'mtime'  1662800235
                                   'redo_metaread'  0
                                        'rest_str'   F3 1992 microgravity 01 im calmer
                                      'tag_artist'  Biosphere
                                     'tag_release'  Microgravity
                                       'tag_title'  Microgravity
                                             'bpm'  109.9
                                    'search_title'  'microgravity':1
                                   'search_artist'  'biosphere':1
                                  'search_release'  'microgravity':1
                                     'search_rest'  '1992':2 'calmer':5 'f3':1 'im':4 'microgravity':3
                                    'search_combo'  '1992':5 'biosphere':2B 'calmer':8 'f3':4 'im':7 'microgravity':1A,3C,6
                                    'tag_tracknum'  1
                                      'num_images'  0
                                             'key'  5A
                                           'quals'  ['q-bass-4', 'q-drums-1', 'q-other-2', 'q-piano-1', 'q-vocals-1']
                                      'lastfmtags'  []
                                        'tag_date'  1992
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800235.2430198  (2022-09-10 10:57:15)
                             'size'  12505434