======================== unified (from filesystem) ========================
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                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  '11'
                                            'date'  '2003'
                                        'comments'  ''
                                           'genre'  'electronic-generic or radio-beats'
                                             'bpm'  '104'
                                             'key'  '7B'
                                        'acoustid'  '90709eab-bbc2-42bf-9479-4f071bee65a3'
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM::eng'                                         'Collected by Тарантиныч'
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'TCON' (Content type, a.k.a. Genre)                 'electronic-generic or radio-beats'
'TDOR' (Original release time)                      '2003'
'TDRC' (Recording time)                             '2003'
'TIT2' (Title/songname/content description)         "If You Kling to Me I'll Klong to You"
'TKEY' (Initial key)                                '7B'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'The Chemical Brothers'
'TPE2' (Band/orchestra/accompaniment)               'The Chemical Brothers'
'TPOS' (Part of a set)                              '2/3'
'TPUB' (Publisher)                                  "Freestyle Dust/Junior Boy's Own/Virgin"
'TRCK' (Track number/Position in set)               '3/11'
'TSO2'                                              'Chemical Brothers, The'
'TSOP' (Performer sort order)                       'Chemical Brothers, The'
'TSRC' (ISRC (international standard recording code))  'GBAAA0300509'
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'TXXX:Artists'                                      'The Chemical Brothers'
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'TXXX:MusicBrainz Album Id'                         '29314f96-150a-463f-9de2-716117ae8c7e'
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'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album/compilation'
'TXXX:MusicBrainz Artist Id'                        '1946a82a-f927-40c2-8235-38d64f50d043'
'TXXX:MusicBrainz Release Group Id'                 '376748ce-c50c-3419-ba46-d076ea5427fa'
'TXXX:MusicBrainz Release Track Id'                 'b66d3c95-86cf-3f7f-bacd-c33201ad3200'
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'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'                                  ['electronic', 'breakbeat', 'leftfield', 'big beat']
'TXXX:lastfmtags'                                   ['dance', 'electronica', 'techno', 'electronic', 'big beat']
'TXXX:originalyear'                                 '2003'
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '+0.15 dB'
'TXXX:replaygain_track_peak'                        '0.457884'
'UFID:http://musicbrainz.org'                       UFID(owner='http://musicbrainz.org', data=b'97675180-be36-4c92-a3e2-7d8ba702a4d9')

========================== row from database ==========================
                                              'id'  1502569
                                            'path'  /data/Music/Bulk/00poprockelectronic/CD2/03. If You Kling To Me I_ll Klong.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  323
                                           'genre'  electronic-generic or radio-beats
                                        'filesize'  13032146
                                           'mtime'  1620568194
                                   'redo_metaread'  0
                                        'rest_str'   00poprockelectronic CD2 03. To I_ll electronic generic or radio beats
                                      'tag_artist'  The Chemical Brothers
                                     'tag_release'  Singles 93-03
                                       'tag_title'  If You Kling to Me I'll Klong to You
                                             'bpm'  104.0
                                    'search_title'  'i':6 'if':1 'ill':8 'kling':3 'klong':9 'll':7 'me':5 'to':4 'you':2
                                   'search_artist'  'brothers':3 'chemical':2 'the':1
                                  'search_release'  '03':3 '93':2 '9303':4 'singles':1
                                     'search_rest'  '00poprockelectronic':1 '03':3,4 'beats':12 'cd2':2 'electronic':8 'generic':9 'i':6 'll':7 'or':10 'radio':11 'to':5
                                    'search_combo'  '00poprockelectronic':17 '03':15C,19,20 '93':14C '9303':16C 'beats':28 'brothers':12B 'cd2':18 'chemical':11B 'electronic':24 'generic':25 'i':6A,22 'if':1A 'ill':8A 'kling':3A 'klong':9A 'll':7A,23 'me':5A 'or':26 'radio':27 'singles':13C 'the':10B 'to':4A,21 'you':2A
                                    'tag_tracknum'  3
                                      'num_images'  1
                                             'key'  7B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-2', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-4', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['dance', 'electronica', 'techno', 'electronic', 'big beat']
                                        'tag_date'  2003
                                     'discogstags'  ['electronic', 'breakbeat', 'leftfield', 'big beat']

============================== file details ==============================
                                           'mtime'  1620568194.1887338  (2021-05-09 15:49:54)
                             'size'  13032146