======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '292'
                                          'artist'  'Nina Simone'
                                     'text_people'  ''
                                         'release'  'Sugar in My Bowl: The Very Best of Nina Simone 1967-1972 (disc 2)'
                                           'title'  "Just Like Tom Thumb's Blues"
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-2', 'Q-UNU-1', 'Q-JZFKS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'Q-PLAY-3', 'q-syn-1', 'q-bass-4', 'q-busy-3', 'q-grit-1', "
 "'Q-PIANO-2', 'q-chart-4', 'q-drums-1', 'q-other-2', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['vocal jazz', 'blues', 'jazz', 'female vocalists', 'soul']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '9'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'prerock-jb-jazz-vocal;funk or soul'
                                             'bpm'  '141.216'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Sugar in My Bowl: The Very Best of Nina Simone 1967-1972 (disc 2)'
'TBPM' (BPM (beats per minute))                     '141.216'
'TCON' (Content type, a.k.a. Genre)                 ['prerock-jb-jazz-vocal', 'funk or soul']
'TIT2' (Title/songname/content description)         "Just Like Tom Thumb's Blues"
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Nina Simone'
'TRCK' (Track number/Position in set)               '9'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '3'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['vocal jazz', 'blues', 'jazz', 'female vocalists', 'soul']
'TXXX:q-bass'                                       '4'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '4'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.64 dB'
'TXXX:replaygain_track_peak'                        '0.633040'

========================== row from database ==========================
                                              'id'  1507662
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Nina Simone/09 - Just Like Tom Thumb_s Blues.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  292
                                           'genre'  prerock-jb-jazz-vocal;funk or soul
                                        'filesize'  9376534
                                           'mtime'  1620532977
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 09 Thumb_s prerock jb jazz vocal;funk or soul
                                      'tag_artist'  Nina Simone
                                     'tag_release'  Sugar in My Bowl: The Very Best of Nina Simone 1967-1972 (disc 2)
                                       'tag_title'  Just Like Tom Thumb's Blues
                                             'bpm'  141.216
                                    'search_title'  'blues':7 'just':1 'like':2 's':5 'thumb':4 'thumbs':6 'tom':3
                                   'search_artist'  'nina':1 'simone':2
                                  'search_release'  '1967':12 '19671972':14 '1972':13 '2':17,18 'best':8 'bowl':4,5 'disc':15,16 'in':2 'my':3 'nina':10 'of':9 'simone':11 'sugar':1 'the':6 'very':7
                                     'search_rest'  'country':4 'exotica':2 'funk':10,12 'jazz':1 'jb':8 'oldies':3 'or':13 'prerock':7 's':6 'soul':14 'thumb':5 'vocal':9,11
                                    'search_combo'  '1967':21C '19671972':23C '1972':22C '2':26C,27C 'best':17C 'blues':7A 'bowl':13C,14C 'country':31 'disc':24C,25C 'exotica':29 'funk':37,39 'in':11C 'jazz':28 'jb':35 'just':1A 'like':2A 'my':12C 'nina':8B,19C 'of':18C 'oldies':30 'or':40 'prerock':34 's':5A,33 'simone':9B,20C 'soul':41 'sugar':10C 'the':15C 'thumb':4A,32 'thumbs':6A 'tom':3A 'very':16C 'vocal':36,38
                                    'tag_tracknum'  9
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-3', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-4', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-4', 'q-grit-1']
                                      'lastfmtags'  ['vocal jazz', 'blues', 'jazz', 'female vocalists', 'soul']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620532977.3907783  (2021-05-09 06:02:57)
                             'size'  9376534