======================== unified (from filesystem) ========================
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                                        'duration'  '960'
                                          'artist'  'Yunus Hussain Khan'
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                                           'title'  'Raga Sujani Malhar: Khyal'
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                             'musicbrainz_albumid'  ''
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                            'musicbrainz_artistid'  ''
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                                      'tracktotal'  '4'
                                            'date'  '1998'
                                        'comments'  ''
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rest: ''

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

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'TCON' (Content type, a.k.a. Genre)                 'loc-asia-india'
'TDRC' (Recording time)                             '1998'
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'TIT2' (Title/songname/content description)         'Raga Sujani Malhar: Khyal'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Yunus Hussain Khan'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TPOS' (Part of a set)                              '1/4'
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'TXXX:Q-LOCALNESS'                                  '4'
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========================== row from database ==========================
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                                            'path'  /data/Music/Bulk/00localcharacter/00asia/An Anthology Of World Music_ North Indian Classical Music/1-03 Raga Sujani Malhar_ Khyal.mp3
                                         'working'  None
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                                    'duration_sec'  960
                                           'genre'  loc-asia-india
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                                           'mtime'  1621626975
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                                     'tag_release'  An Anthology Of World Music: North Indian Classical Music
                                       'tag_title'  Raga Sujani Malhar: Khyal
                                             'bpm'  134.914
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                                   'search_artist'  'hussain':2 'khan':3 'yunus':1
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                                     'search_rest'  '00asia':1 '1':3 'asia':6 'india':7 'loc':5 'malhar':4 'music':2
                                    'search_combo'  '00asia':18 '1':20 'an':9C 'anthology':10C 'asia':23 'classical':17C 'hussain':7B 'india':24 'indian':16C 'khan':8B 'khyal':5A 'loc':22 'malhar':3A,4A,21 'music':13C,14C,19 'north':15C 'of':11C 'raga':1A 'sujani':2A 'world':12C 'yunus':6B
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-4', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-3', 'Q-JZFKS-1', 'q-drums-2', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-BUSY-2', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1998
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621626974.8664055  (2021-05-21 21:56:14)
                             'size'  23059191