======================== unified (from filesystem) ========================
                                         'bitrate'  '213.014'
                                        'duration'  '131'
                                          'artist'  'Clara Rockmore'
                                     'text_people'  ''
                                         'release'  'Shirley & Spinoza'
                                           'title'  'Tchaikovsky: Valse sentimentale'
                                           'quals'  ("['Q-HAP-2', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-1', 'q-syn-2', 'Q-PLAY-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-1', 'q-drums-1', 'q-other-1', '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'  '10'
                                      'tracktotal'  ''
                                            'date'  '1987'
                                        'comments'  ''
                                           'genre'  'set-pl-shirleyspinoza;set-cover or covered;set-pl-mor'
                                             'bpm'  '144.028'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Shirley & Spinoza'
'TBPM' (BPM (beats per minute))                     '144.028'
'TCON' (Content type, a.k.a. Genre)                 ['set-pl-shirleyspinoza',
 'set-pl-shirleyspinoza',
 'set-cover or covered',
 'set-pl-mor']
'TDRC' (Recording time)                             '1987'
'TIT2' (Title/songname/content description)         'Tchaikovsky: Valse sentimentale'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Clara Rockmore'
'TPE2' (Band/orchestra/accompaniment)               'Various Artists'
'TRCK' (Track number/Position in set)               '10'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['electronic', 'classical']
'TXXX:lastfmtags'                                   ['contemporary classical',
 'theremin',
 'electronic',
 'early electronic',
 'classical']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.99 dB'
'TXXX:replaygain_track_peak'                        '0.732115'

========================== row from database ==========================
                                              'id'  949405
                                            'path'  /data/Music/Bulk/sns/Clara Rockmore - Tchaikovsky Valse Sentimentale.mp3
                                         'working'  None
                                         'bitrate'  213
                                    'duration_sec'  131
                                           'genre'  set-pl-shirleyspinoza;set-cover or covered;set-pl-mor
                                        'filesize'  3492350
                                           'mtime'  1647277238
                                   'redo_metaread'  0
                                        'rest_str'   sns Sentimentale set pl shirleyspinoza;set cover covered;set pl
                                      'tag_artist'  Clara Rockmore
                                     'tag_release'  Shirley & Spinoza
                                       'tag_title'  Tchaikovsky: Valse sentimentale
                                             'bpm'  144.028
                                    'search_title'  'sentimentale':4 'tchaikovsky':1,2 'valse':3
                                   'search_artist'  'clara':1 'rockmore':2
                                  'search_release'  'shirley':1 'spinoza':2
                                     'search_rest'  'cover':9 'covered':10,12 'pl':4 'sentimentale':2 'set':3,6,8,11,13 'shirleyspinoza':5,7 'sns':1
                                    'search_combo'  'clara':5B 'cover':17 'covered':18,20 'pl':12 'rockmore':6B 'sentimentale':4A,10 'set':11,14,16,19,21 'shirley':7C 'shirleyspinoza':13,15 'sns':9 'spinoza':8C 'tchaikovsky':1A,2A 'valse':3A
                                    'tag_tracknum'  10
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HAP-2', 'Q-OLDST-2', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-HHRNBTT-1', 'Q-LOCALNESS-1', 'q-syn-2', 'Q-PLAY-3', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'Q-PIANO-2', 'q-chart-1', 'q-drums-1', 'q-other-1', 'q-vocals-4', 'q-mixbeat-1']
                                      'lastfmtags'  ['contemporary classical', 'theremin', 'electronic', 'early electronic', 'classical']
                                        'tag_date'  1987
                                     'discogstags'  ['electronic', 'classical']

============================== file details ==============================
                                           'mtime'  1647277237.5450373  (2022-03-14 18:00:37)
                             'size'  3492350