======================== unified (from filesystem) ========================
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                                        'duration'  '115'
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                            'musicbrainz_artistid'  ''
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                                      'tracktotal'  '56'
                                            'date'  '2016'
                                        'comments'  ''
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                                             'bpm'  '93.4'
                                             'key'  '11A'
                                        'acoustid'  ''
rest: ''

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'TCON' (Content type, a.k.a. Genre)                 'hip hop or rnb or rap or turntablism-chillhop'
'TDRC' (Recording time)                             '2016'
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'TIT2' (Title/songname/content description)         '[peaceful.]'
'TKEY' (Initial key)                                '11A'
'TPE1' (Lead performer(s)/Soloist(s))               'lucky.s'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPUB' (Publisher)                                  'Inner Ocean'
'TRCK' (Track number/Position in set)               '56/56'
'TXXX:CATALOGUE NUMBER'                             'INNER041'
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'TXXX:Q-HHRNBTT'                                    '3'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   'instrumental hip-hop'
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'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
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'TXXX:q-mixbeat'                                    '3'
'TXXX:q-other'                                      '3'
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'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00popandrock-hiphop-rap-rnb-turntablism/buru - futures - volume 02 - inner ocean records (2016)/56 lucky.s - [peaceful.].mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  115
                                           'genre'  hip hop or rnb or rap or turntablism-chillhop
                                        'filesize'  5032586
                                           'mtime'  1620587333
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                                      'tag_artist'  lucky.s
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                                       'tag_title'  [peaceful.]
                                             'bpm'  93.4
                                    'search_title'  'peaceful':1,2
                                   'search_artist'  'lucky':1 'luckys':3 's':2
                                  'search_release'  '2016':7,8 'futures':1 'inner':3,4 'ocean':5,6 'volume':2
                                     'search_rest'  '56':11 'buru':5 'chillhop':15 'futures':6 'hip':12 'hiphop':1 'hop':13 'inner':8 'ocean':9 'or':14 'rap':2 'records':10 'rnb':3 'turntablism':4 'volume':7
                                    'search_combo'  '2016':12C,13C '56':24 'buru':18 'chillhop':28 'futures':6C,19 'hip':25 'hiphop':14 'hop':26 'inner':8C,9C,21 'lucky':3B 'luckys':5B 'ocean':10C,11C,22 'or':27 'peaceful':1A,2A 'rap':15 'records':23 'rnb':16 's':4B 'turntablism':17 'volume':7C,20
                                    'tag_tracknum'  56
                                      'num_images'  1
                                             'key'  11A
                                           'quals'  ['Q-HHRNBTT-3', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-3', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-4', 'q-syn-3', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['instrumental hip-hop']
                                        'tag_date'  2016
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620587333.3378978  (2021-05-09 21:08:53)
                             'size'  5032586