======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '310'
                                          'artist'  'c.db.sn'
                                     'text_people'  ''
                                         'release'  'At the End of It All'
                                           'title'  '... At the End of It All'
                                           'quals'  "['q-bass-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-1']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '11'
                                            'date'  '2011'
                                        'comments'  ''
                                           'genre'  'im-electronic'
                                             'bpm'  '128.1'
                                             'key'  '9A'
                                        'acoustid'  'c4a987cc-7554-4681-8ab9-f30a61b4c6a2'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'At the End of It All'
'TBPM' (BPM (beats per minute))                     '128.1'
'TCON' (Content type, a.k.a. Genre)                 'im-electronic'
'TDOR' (Original release time)                      '2011'
'TDRC' (Recording time)                             '2011-12-13'
'TIT2' (Title/songname/content description)         '... At the End of It All'
'TKEY' (Initial key)                                '9A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'c.db.sn'
'TPE2' (Band/orchestra/accompaniment)               'c.db.sn'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Tympanik Audio'
'TRCK' (Track number/Position in set)               '2/11'
'TSO2'                                              'c.db.sn'
'TSOP' (Performer sort order)                       'c.db.sn'
'TXXX:ASIN'                                         'B006R6Q2IK'
'TXXX:Acoustid Id'                                  'c4a987cc-7554-4681-8ab9-f30a61b4c6a2'
'TXXX:BARCODE'                                      '884501650007'
'TXXX:CATALOGNUMBER'                                'TA065'
'TXXX:MusicBrainz Album Artist Id'                  'b0f0b6ab-dbc6-478e-bbfd-fdc9fa4424f2'
'TXXX:MusicBrainz Album Id'                         '2e1ee30a-1bf6-4baa-b217-db9c3d900136'
'TXXX:MusicBrainz Album Release Country'            'US'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'b0f0b6ab-dbc6-478e-bbfd-fdc9fa4424f2'
'TXXX:MusicBrainz Release Group Id'                 '161abf95-de19-4349-86d5-33fea14ceccb'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.74 dB'
'TXXX:replaygain_track_peak'                        '0.492887'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'f1c5de0b-a3d1-4639-b2b3-fc850d62b17d')

========================== row from database ==========================
                                              'id'  1537215
                                            'path'  /data/Music/Other/F3/c.db.sn/02 ... at the end of it all.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  310
                                           'genre'  im-electronic
                                        'filesize'  12497099
                                           'mtime'  1662800161
                                   'redo_metaread'  0
                                        'rest_str'   F3 02 at end it all im electronic
                                      'tag_artist'  c.db.sn
                                     'tag_release'  At the End of It All
                                       'tag_title'  ... At the End of It All
                                             'bpm'  128.1
                                    'search_title'  'all':6 'at':1 'end':3 'it':5 'of':4 'the':2
                                   'search_artist'  'c':1 'cdbsn':4 'db':2 'sn':3
                                  'search_release'  'all':6 'at':1 'end':3 'it':5 'of':4 'the':2
                                     'search_rest'  'all':5 'at':2 'electronic':7 'end':3 'f3':1 'im':6 'it':4
                                    'search_combo'  'all':6A,16C,21 'at':1A,11C,18 'c':7B 'cdbsn':10B 'db':8B 'electronic':23 'end':3A,13C,19 'f3':17 'im':22 'it':5A,15C,20 'of':4A,14C 'sn':9B 'the':2A,12C
                                    'tag_tracknum'  2
                                      'num_images'  1
                                             'key'  9A
                                           'quals'  ['q-bass-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-1']
                                      'lastfmtags'  []
                                        'tag_date'  2011
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800160.5374324  (2022-09-10 10:56:00)
                             'size'  12497099