======================== unified (from filesystem) ========================
                                         'bitrate'  '24.0'
                                        'duration'  '140'
                                          'artist'  'Helen Kane'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Hello Beautiful'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['20s', 'roaring 20s', 'oldies', 'jazz', 'female vocalists', 'betty boop']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1930'
                                        'comments'  ''
                                           'genre'  'set-th-incharacter'
                                             'bpm'  '103.961'
                                             'key'  '3A'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '103.961'
'TCON' (Content type, a.k.a. Genre)                 'set-th-incharacter'
'TDRC' (Recording time)                             '1930'
'TIT2' (Title/songname/content description)         'Hello Beautiful'
'TKEY' (Initial key)                                '3A'
'TPE1' (Lead performer(s)/Soloist(s))               'Helen Kane'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['20s', 'roaring 20s', 'oldies', 'jazz', 'female vocalists', 'betty boop']
'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'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.83 dB'
'TXXX:replaygain_track_peak'                        '0.482580'

========================== row from database ==========================
                                              'id'  978237
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/Helen Kane - misc/Helen Kane - Hello Beautiful.mp3
                                         'working'  None
                                         'bitrate'  24
                                    'duration_sec'  140
                                           'genre'  set-th-incharacter
                                        'filesize'  424385
                                           'mtime'  1676045822
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country misc set th incharacter
                                      'tag_artist'  Helen Kane
                                     'tag_release'  None
                                       'tag_title'  Hello Beautiful
                                             'bpm'  103.961
                                    'search_title'  'beautiful':2 'hello':1
                                   'search_artist'  'helen':1 'kane':2
                                  'search_release'  
                                     'search_rest'  'country':4 'exotica':2 'incharacter':8 'jazz':1 'misc':5 'oldies':3 'set':6 'th':7
                                    'search_combo'  'beautiful':2A 'country':8 'exotica':6 'helen':3B 'hello':1A 'incharacter':12 'jazz':5 'kane':4B 'misc':9 'oldies':7 'set':10 'th':11
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  3A
                                           'quals'  ['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', 'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', 'q-play-2', 'q-chart-2', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-1']
                                      'lastfmtags'  ['20s', 'roaring 20s', 'oldies', 'jazz', 'female vocalists', 'betty boop']
                                        'tag_date'  1930
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1676045821.6050782  (2023-02-10 17:17:01)
                             'size'  424385