======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '124'
                                          'artist'  'Jukka-Pekka Kervinen'
                                     'text_people'  ''
                                         'release'  'Classwar Karaoke - 0021 Survey'
                                           'title'  'Diagonal Letter'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-3', 'q-syn-2', 'q-bass-1', 'q-busy-3', "
 "'q-grit-2', 'q-play-2', 'Q-OLDST-3', 'q-chart-1', 'q-drums-4', 'q-other-1', "
 "'q-piano-1', 'q-vocals-2', 'Q-HHRNBTT-1', 'q-mixbeat-1', 'Q-LOCALNESS-1']")
                                      'lastfmtags'  "['ilse', 'noise', 'electronic', 'experimental', 'avant-garde']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '52'
                                      'tracktotal'  ''
                                            'date'  '2013'
                                        'comments'  ''
                                           'genre'  'electronic-unsorted'
                                             'bpm'  '117'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Classwar Karaoke - 0021 Survey'
'TBPM' (BPM (beats per minute))                     '117'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-unsorted'
'TCOP' (Copyright message)                          ('Attribution-Noncommercial-Sharealike: Http: / / Creativecommons.Org / '
 'Licenses / By-Nc-Sa / 3.0 /')
'TDRC' (Recording time)                             '2013'
'TIT2' (Title/songname/content description)         'Diagonal Letter'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jukka-Pekka Kervinen'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/1'
'TRCK' (Track number/Position in set)               '52'
'TSSE' (Software/Hardware and settings used for encoding)  'LAME 64bits version 3.98.4 (http://www.mp3dev.org/)'
'TXXX:Access Rating'                                '10'
'TXXX:Dynamic Range (DR)'                           '8'
'TXXX:Dynamic Range (R128)'                         '6.4895100593566895'
'TXXX:Peak Level (R128)'                            '+0.5 dBTP; +0.5 Left; +0.4 Right'
'TXXX:Peak Level (Sample)'                          '+0.0 dB; +0.0 Left; +0.0 Right'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '3'
'TXXX:Tool Name'                                    'Media Center'
'TXXX:Tool Version'                                 '20.0.131'
'TXXX:Volume Level (R128)'                          '-12.5406599044799805'
'TXXX:Volume Level (ReplayGain)'                    '-7.5406599044799805'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['ilse', 'noise', 'electronic', 'experimental', 'avant-garde']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+10.52 dB'
'TXXX:replaygain_track_peak'                        '0.134915'

========================== row from database ==========================
                                              'id'  1386418
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Various - Classwar Karaoke - 0021 Survey/52 - Jukka-Pekka Kervinen - Diagonal Letter.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  124
                                           'genre'  electronic-unsorted
                                        'filesize'  5035074
                                           'mtime'  1622758903
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm Various 52 electronic unsorted
                                      'tag_artist'  Jukka-Pekka Kervinen
                                     'tag_release'  Classwar Karaoke - 0021 Survey
                                       'tag_title'  Diagonal Letter
                                             'bpm'  117.0
                                    'search_title'  'diagonal':1 'letter':2
                                   'search_artist'  'jukka':1 'jukkapekka':3 'kervinen':4 'pekka':2
                                  'search_release'  'classwar':1 'karaoke':2 'survey':3
                                     'search_rest'  '52':2 'electronic':3 'unsorted':4 'various':1
                                    'search_combo'  '52':11 'classwar':7C 'diagonal':1A 'electronic':12 'jukka':3B 'jukkapekka':5B 'karaoke':8C 'kervinen':6B 'letter':2A 'pekka':4B 'survey':9C 'unsorted':13 'various':10
                                    'tag_tracknum'  52
                                      'num_images'  1
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-3', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-2', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['ilse', 'noise', 'electronic', 'experimental', 'avant-garde']
                                        'tag_date'  2013
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1622758902.9904058  (2021-06-04 00:21:42)
                             'size'  5035074