======================== unified (from filesystem) ========================
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                                      'tracktotal'  '12'
                                            'date'  '2013'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '132'
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'TDOR' (Original release time)                      '2013'
'TDRC' (Recording time)                             '2013-11-18'
'TIT2' (Title/songname/content description)         'Improvisation for Coughs and a Cell Phone'
'TKEY' (Initial key)                                '3A'
'TMED' (Media type)                                 'Digital Media'
'TPE1' (Lead performer(s)/Soloist(s))               'Nils Frahm'
'TPE2' (Band/orchestra/accompaniment)               'Nils Frahm'
'TPOS' (Part of a set)                              '1/1'
'TPUB' (Publisher)                                  'Erased Tapes Records'
'TRCK' (Track number/Position in set)               '6/12'
'TSO2'                                              'Frahm, Nils'
'TSOP' (Performer sort order)                       'Frahm, Nils'
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'TXXX:Artists'                                      'Nils Frahm'
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'TXXX:q-other'                                      '2'
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========================== row from database ==========================
                                              'id'  193103
                                            'path'  /data/Music/Bulk/00instruments-classical/Nils Frahm/2013 - Spaces/06 - Improvisation For Coughs And A Cell Phone.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  404
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  16205186
                                           'mtime'  1620574212
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                                      'tag_artist'  Nils Frahm
                                     'tag_release'  Spaces
                                       'tag_title'  Improvisation for Coughs and a Cell Phone
                                             'bpm'  132.0
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                                   'search_artist'  'frahm':2 'nils':1
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                                     'search_rest'  '00instruments':1 '2013':3 'a':6 'and':5 'classical':2 'for':4 'instruments':8 'prerock':7
                                    'search_combo'  '00instruments':11 '2013':13 'a':5A,16 'and':4A,15 'cell':6A 'classical':12 'coughs':3A 'for':2A,14 'frahm':9B 'improvisation':1A 'instruments':18 'nils':8B 'phone':7A 'prerock':17 'spaces':10C
                                    'tag_tracknum'  6
                                      'num_images'  1
                                             'key'  3A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-4', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-2', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-3', 'q-grit-1']
                                      'lastfmtags'  ['contemporary classical', 'instrumental', 'piano', 'modern classical', 'ambient']
                                        'tag_date'  2013
                                     'discogstags'  ['contemporary', 'classical']

============================== file details ==============================
                                           'mtime'  1620574211.9783485  (2021-05-09 17:30:11)
                             'size'  16205186