======================== unified (from filesystem) ========================
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                                        'duration'  '239'
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                                      'tracktotal'  '11'
                                            'date'  '2002'
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'TDRC' (Recording time)                             '2002'
'TIT2' (Title/songname/content description)         'The Night You Saved My Life'
'TKEY' (Initial key)                                '8B'
'TMED' (Media type)                                 'Enhanced CD'
'TPE1' (Lead performer(s)/Soloist(s))               'Tanya Donelly'
'TPE2' (Band/orchestra/accompaniment)               'Tanya Donelly'
'TPOS' (Part of a set)                              '1/1'
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'TSOP' (Performer sort order)                       'Donelly, Tanya'
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'TXXX:Artists'                                      'Tanya Donelly'
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'TXXX:originalyear'                                 '2002'
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'TXXX:q-busy'                                       '3'
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'TXXX:q-drums'                                      '3'
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'TXXX:q-mixbeat'                                    '1'
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Tanya Donelly/03 - Night You Saved My Life, The.mp3
                                         'working'  None
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                                    'duration_sec'  239
                                           'genre'  ifs-songwriter-indie
                                        'filesize'  6891350
                                           'mtime'  1636400436
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                                     'tag_release'  Beautysleep
                                       'tag_title'  The Night You Saved My Life
                                             'bpm'  92.0
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                                   'search_artist'  'donelly':2 'tanya':1
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                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  8B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-2', 'q-other-3', 'Q-HAP-2', 'q-bass-4', 'q-grit-2']
                                      'lastfmtags'  ['indie', 'alternative', 'singer songwriter', 'female vocalists', 'rock']
                                        'tag_date'  2002
                                     'discogstags'  ['rock']

============================== file details ==============================
                                           'mtime'  1636400435.914571  (2021-11-08 20:40:35)
                             'size'  6891350