======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '328'
                                          'artist'  'Clara Rockmore'
                                     'text_people'  ''
                                         'release'  'The Art Of The Theremin'
                                           'title'  'Achron; Hebrew Melody'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', "
 "'Q-OLDST-2', 'q-syn-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-3', "
 "'Q-PIANO-3', 'q-chart-2', 'q-drums-1', 'q-other-2', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  ("['contemporary classical', 'theremin', 'electronic', 'early electronic', "
 "'classical']")
                                     'discogstags'  "['electronic', 'classical']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  '1987'
                                        'comments'  ''
                                           'genre'  'electronic-experimental-early;mi-theremin'
                                             'bpm'  '133.5'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'The Art Of The Theremin'
'TBPM' (BPM (beats per minute))                     '133.5'
'TCON' (Content type, a.k.a. Genre)                 ['electronic-experimental-early', 'mi-theremin']
'TDRC' (Recording time)                             '1987'
'TIT2' (Title/songname/content description)         'Achron; Hebrew Melody'
'TKEY' (Initial key)                                '9A'
'TLEN' (Length)                                     '328783'
'TPE1' (Lead performer(s)/Soloist(s))               'Clara Rockmore'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['electronic', 'classical']
'TXXX:lastfmtags'                                   ['contemporary classical',
 'theremin',
 'electronic',
 'early electronic',
 'classical']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '3'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+0.11 dB'
'TXXX:replaygain_track_peak'                        '0.711551'

========================== row from database ==========================
                                              'id'  973500
                                            'path'  /data/Music/Bulk/00exnnpjpsprgttidm/Clara Rockmore - The Art Of The Theremin (1987)/05. Achron; Hebrew Melody.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  328
                                           'genre'  electronic-experimental-early;mi-theremin
                                        'filesize'  7892843
                                           'mtime'  1620527988
                                   'redo_metaread'  0
                                        'rest_str'   00exnnpjpsprgttidm (1987) 05. electronic experimental early;mi theremin
                                      'tag_artist'  Clara Rockmore
                                     'tag_release'  The Art Of The Theremin
                                       'tag_title'  Achron; Hebrew Melody
                                             'bpm'  133.5
                                    'search_title'  'achron':1,2 'hebrew':3 'melody':4
                                   'search_artist'  'clara':1 'rockmore':2
                                  'search_release'  'art':2 'of':3 'the':1 'theremin':4
                                     'search_rest'  '05':3,4 '1987':1,2 'early':7,9 'electronic':5 'experimental':6 'mi':8,10 'theremin':11
                                    'search_combo'  '05':13,14 '1987':11,12 'achron':1A,2A 'art':8C 'clara':5B 'early':17,19 'electronic':15 'experimental':16 'hebrew':3A 'melody':4A 'mi':18,20 'of':9C 'rockmore':6B 'the':7C 'theremin':10C,21
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-3', 'q-play-3', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-3', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['contemporary classical', 'theremin', 'electronic', 'early electronic', 'classical']
                                        'tag_date'  1987
                                     'discogstags'  ['electronic', 'classical']

============================== file details ==============================
                                           'mtime'  1620527987.5498986  (2021-05-09 04:39:47)
                             'size'  7892843