======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '217'
                                          'artist'  "J 'N' J"
                                     'text_people'  ''
                                         'release'  'Old School Hardcore'
                                           'title'  'The Ballet'
                                           'quals'  ("['Q-HAP-2', 'Q-UNU-1', 'Q-OLDST-3', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-JZFKS-1', 'q-syn-3', 'q-bass-4', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-1', 'q-piano-1', 'q-vocals-1', "
 "'q-mixbeat-4']")
                                     'discogstags'  "['hardcore', 'techno', 'electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '12'
                                      'tracktotal'  '19'
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'electronic-th-hardcore'
                                             'bpm'  '137.665'
                                             'key'  '6A'
                                        'acoustid'  'b933b8f0-9d47-486f-96aa-f993b0b0a482'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'TALB' (Album/Movie/Show title)                     'Old School Hardcore'
'TBPM' (BPM (beats per minute))                     '137.665'
'TCMP'                                              '1'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-hardcore'
'TDOR' (Original release time)                      '1997'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'The Ballet'
'TKEY' (Initial key)                                '6A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               "J 'N' J"
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '2/2'
'TPUB' (Publisher)                                  'Arcade Music Company Nederland B.V.'
'TRCK' (Track number/Position in set)               '12/19'
'TSO2'                                              'Various Artists'
'TSOP' (Performer sort order)                       "J 'N' J"
'TXXX:Acoustid Id'                                  'b933b8f0-9d47-486f-96aa-f993b0b0a482'
'TXXX:Artists'                                      "J 'N' J"
'TXXX:BARCODE'                                      '8712687104156'
'TXXX:CATALOGNUMBER'                                '01.10415'
'TXXX:MusicBrainz Album Artist Id'                  '89ad4ac3-39f7-470e-963a-56509c546377'
'TXXX:MusicBrainz Album Id'                         '9be58233-f902-4b56-9a83-7524485ff680'
'TXXX:MusicBrainz Album Release Country'            'NL'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        'fc13f7a6-05dc-4613-82ce-df71dd3c89a4'
'TXXX:MusicBrainz Release Group Id'                 'b2e1d952-4249-3ac2-8a00-571c56db18da'
'TXXX:MusicBrainz Release Track Id'                 '061d1aaa-a988-3365-a734-2c09e4b4d2a5'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  ['hardcore', 'techno', 'electronic']
'TXXX:originalyear'                                 '1997'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '4'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-3.20 dB'
'TXXX:replaygain_track_peak'                        '0.935674'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'8b80176a-9224-4af8-8c6f-ce07ae91609d')

========================== row from database ==========================
                                              'id'  1499126
                                            'path'  /data/Music/Bulk/00poprockelectronic/00techno-house-harder-beats/old school hardcore/cd 2/12 - J _N_ J - The Ballet.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  217
                                           'genre'  electronic-th-hardcore
                                        'filesize'  3542743
                                           'mtime'  1620564505
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic 00techno house harder beats old school hardcore cd 2 12 _N_ electronic th hardcore
                                      'tag_artist'  J 'N' J
                                     'tag_release'  Old School Hardcore
                                       'tag_title'  The Ballet
                                             'bpm'  137.665
                                    'search_title'  'ballet':2 'the':1
                                   'search_artist'  'j':1 'n':2,3
                                  'search_release'  'hardcore':3 'old':1 'school':2
                                     'search_rest'  '00poprockelectronic':1 '00techno':2 '2':10 'beats':5 'cd':9 'electronic':12 'hardcore':8 'harder':4 'house':3 'n':11 'old':6 'school':7 'th':13
                                    'search_combo'  '00poprockelectronic':9 '00techno':10 '2':18 'ballet':2A 'beats':13 'cd':17 'electronic':20 'hardcore':8C,16 'harder':12 'house':11 'j':3B 'n':4B,5B,19 'old':6C,14 'school':7C,15 'th':21 'the':1A
                                    'tag_tracknum'  12
                                      'num_images'  1
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-4', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-1', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1997
                                     'discogstags'  ['hardcore', 'techno', 'electronic']

============================== file details ==============================
                                           'mtime'  1620564505.1732545  (2021-05-09 14:48:25)
                             'size'  3542743