======================== unified (from filesystem) ========================
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                                        'duration'  '466'
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                                      'lastfmtags'  "['electronica', 'idm', 'techno', 'electronic', 'ambient']"
                                     'discogstags'  "['electronic']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '4'
                                      'tracktotal'  '8'
                                            'date'  '1999'
                                        'comments'  ''
                                           'genre'  'electronic-th-techno'
                                             'bpm'  '90.980'
                                             'key'  '10A'
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rest: ''

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

'COMM:ID3v1 Comment:eng'                            'Ripped & Encoded By: yvs'
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'TBPM' (BPM (beats per minute))                     '90.980'
'TCON' (Content type, a.k.a. Genre)                 'electronic-th-techno'
'TDOR' (Original release time)                      '1999'
'TDRC' (Recording time)                             '1999-04-05'
'TIPL' (Involved people list)                       TIPL(encoding=<Encoding.UTF16: 1>, people=[['producer', 'Paul Hartnoll'], ['producer', 'Mickey Mann'], ['producer', 'Phil Hartnoll'], ['engineer', 'Lem'], ['engineer', 'Dave Pemberton'], ['mix', 'Mickey Mann'], ['guest drums and percussion', 'Steve Sidelnyk']])
'TIT2' (Title/songname/content description)         "I Don't Know You People"
'TKEY' (Initial key)                                '10A'
'TMED' (Media type)                                 'CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Orbital'
'TPE2' (Band/orchestra/accompaniment)               'Orbital'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'FFRR'
'TRCK' (Track number/Position in set)               '4/8'
'TSO2'                                              'Orbital'
'TSOP' (Performer sort order)                       'Orbital'
'TSRC' (ISRC (international standard recording code))  'GBANR9900004'
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'TXXX:MusicBrainz Album Id'                         '43aee7e5-d74f-3cc2-8772-701aeb43e2b4'
'TXXX:MusicBrainz Album Release Country'            'GB'
'TXXX:MusicBrainz Album Status'                     'official'
'TXXX:MusicBrainz Album Type'                       'album'
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'TXXX:Q-UNU'                                        '1'
'TXXX:SCRIPT'                                       'Latn'
'TXXX:discogstags'                                  'electronic'
'TXXX:lastfmtags'                                   ['electronica', 'idm', 'techno', 'electronic', 'ambient']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
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'TXXX:q-mixbeat'                                    '4'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '4'
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'TXXX:replaygain_track_gain'                        '-0.68 dB'
'TXXX:replaygain_track_peak'                        '0.517229'
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========================== row from database ==========================
                                              'id'  1508010
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/0synth_and_beat/Orbital/[1999] The Middle of Nowhere/04 - I Don_t Know You People.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  466
                                           'genre'  electronic-th-techno
                                        'filesize'  14929490
                                           'mtime'  1620521050
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm 0synth_and_beat [1999] 04 Don_t electronic th techno
                                      'tag_artist'  Orbital
                                     'tag_release'  The Middle of Nowhere
                                       'tag_title'  I Don't Know You People
                                             'bpm'  90.98
                                    'search_title'  'don':2 'dont':4 'i':1 'know':5 'people':7 't':3 'you':6
                                   'search_artist'  'orbital':1
                                  'search_release'  'middle':2 'nowhere':4 'of':3 'the':1
                                     'search_rest'  '0synth':1 '1999':4,5 'and':2 'beat':3 'don':6 'electronic':8 't':7 'techno':10 'th':9
                                    'search_combo'  '0synth':13 '1999':16,17 'and':14 'beat':15 'don':2A,18 'dont':4A 'electronic':20 'i':1A 'know':5A 'middle':10C 'nowhere':12C 'of':11C 'orbital':8B 'people':7A 't':3A,19 'techno':22 'th':21 'the':9C 'you':6A
                                    'tag_tracknum'  4
                                      'num_images'  0
                                             'key'  10A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-4', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-4', 'q-syn-4', 'q-chart-3', 'q-other-2', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['electronica', 'idm', 'techno', 'electronic', 'ambient']
                                        'tag_date'  1999
                                     'discogstags'  ['electronic']

============================== file details ==============================
                                           'mtime'  1620521050.3309708  (2021-05-09 02:44:10)
                             'size'  14929490