======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '133'
                                          'artist'  'The Mothers of Invention'
                                     'text_people'  ''
                                         'release'  'Absolutely Free'
                                           'title'  'The Duke of Prunes'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-2', 'Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['experimental rock', 'avant garde', 'progressive rock', 'experimental', "
 "'rock']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '2'
                                      'tracktotal'  '15'
                                            'date'  '1989'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter'
                                             'bpm'  '138.417'
                                             'key'  '9A'
                                        'acoustid'  '2cd7e867-1499-4221-bade-efb999af8516'
rest: ''

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

'COMM:CDDB Disc ID:XXX'                             'DB0A3E0F'
'COMM:ID3v1 Comment:XXX'                            'DB0A3E0F'
'TALB' (Album/Movie/Show title)                     'Absolutely Free'
'TBPM' (BPM (beats per minute))                     '138.417'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter'
'TDOR' (Original release time)                      '1967'
'TDRC' (Recording time)                             '1989'
'TIT2' (Title/songname/content description)         'The Duke of Prunes'
'TKEY' (Initial key)                                '9A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The Mothers of Invention'
'TPE2' (Band/orchestra/accompaniment)               'The Mothers of Invention'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Zappa Records'
'TRCK' (Track number/Position in set)               '2/15'
'TSO2'                                              'Mothers of Invention, The'
'TSOP' (Performer sort order)                       'Mothers of Invention, The'
'TSSE' (Software/Hardware and settings used for encoding)  'Audiograbber 1.80, LAME dll 3.89, 128 Kbit/s, Joint Stereo, Normal quality'
'TXXX:Acoustid Id'                                  '2cd7e867-1499-4221-bade-efb999af8516'
'TXXX:CATALOGNUMBER'                                'CD ZAP 12'
'TXXX:MusicBrainz Album Artist Id'                  'fe98e268-4ddd-441b-95a0-b219375f9ae4'
'TXXX:MusicBrainz Album Id'                         'ca293ff6-a907-311f-a671-e2bd9716898c'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
'TXXX:MusicBrainz Artist Id'                        'fe98e268-4ddd-441b-95a0-b219375f9ae4'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:lastfmtags'                                   ['experimental rock', 'avant garde', 'progressive rock', 'experimental', 'rock']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.44 dB'
'TXXX:replaygain_track_peak'                        '0.577355'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'03782a04-d626-49b6-867f-5d32a2a6c4d3')

========================== row from database ==========================
                                              'id'  1329202
                                            'path'  /data/Music/Bulk/00poprockelectronic/Frank Zappa/Absolutely Free/Zappa, Frank - 02 - The Duke of Prunes.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  133
                                           'genre'  ifs-songwriter
                                        'filesize'  2138483
                                           'mtime'  1636915927
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic Frank Zappa Zappa, Frank 02 ifs songwriter
                                      'tag_artist'  The Mothers of Invention
                                     'tag_release'  Absolutely Free
                                       'tag_title'  The Duke of Prunes
                                             'bpm'  138.417
                                    'search_title'  'duke':2 'of':3 'prunes':4 'the':1
                                   'search_artist'  'invention':4 'mothers':2 'of':3 'the':1
                                  'search_release'  'absolutely':1 'free':2
                                     'search_rest'  '00poprockelectronic':1 'frank':2 'ifs':5 'songwriter':6 'zappa':3,4
                                    'search_combo'  '00poprockelectronic':11 'absolutely':9C 'duke':2A 'frank':12 'free':10C 'ifs':15 'invention':8B 'mothers':6B 'of':3A,7B 'prunes':4A 'songwriter':16 'the':1A,5B 'zappa':13,14
                                    'tag_tracknum'  2
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-1', 'q-other-3', 'Q-HAP-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['experimental rock', 'avant garde', 'progressive rock', 'experimental', 'rock']
                                        'tag_date'  1989
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1636915926.8364053  (2021-11-14 19:52:06)
                             'size'  2138483