======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '187'
                                          'artist'  'Herbie Hancock'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Soul Bossa Nova'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-HHRNBTT-1', "
 "'Q-LOCALNESS-3', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-2', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['fusion', 'jazz', 'jazz fusion', 'piano', 'funk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'loc-style-latin'
                                             'bpm'  '103.272'
                                             'key'  '6B'
                                        'acoustid'  ''
rest: ''

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

'TBPM' (BPM (beats per minute))                     '103.272'
'TCON' (Content type, a.k.a. Genre)                 'loc-style-latin'
'TIT2' (Title/songname/content description)         'Soul Bossa Nova'
'TKEY' (Initial key)                                '6B'
'TPE1' (Lead performer(s)/Soloist(s))               'Herbie Hancock'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '2'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['fusion', 'jazz', 'jazz fusion', 'piano', 'funk']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '2'
'TXXX:q-drums'                                      '4'
'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'                                     '2'
'TXXX:replaygain_track_gain'                        '-0.16 dB'
'TXXX:replaygain_track_peak'                        '0.417863'

========================== row from database ==========================
                                              'id'  786496
                                            'path'  /data/Music/Bulk/00localcharacter/Latin/Various/Herbie Hancock - Soul Bossa Nova.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  187
                                           'genre'  loc-style-latin
                                        'filesize'  3000104
                                           'mtime'  1620592727
                                   'redo_metaread'  0
                                        'rest_str'   00localcharacter Latin Various loc style latin
                                      'tag_artist'  Herbie Hancock
                                     'tag_release'  None
                                       'tag_title'  Soul Bossa Nova
                                             'bpm'  103.272
                                    'search_title'  'bossa':2 'nova':3 'soul':1
                                   'search_artist'  'hancock':2 'herbie':1
                                  'search_release'  
                                     'search_rest'  'latin':1 'loc':3 'style':4 'various':2
                                    'search_combo'  'bossa':2A 'hancock':5B 'herbie':4B 'latin':6 'loc':8 'nova':3A 'soul':1A 'style':9 'various':7
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  6B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-2', 'q-busy-3', 'q-drums-4', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['fusion', 'jazz', 'jazz fusion', 'piano', 'funk']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620592726.7134573  (2021-05-09 22:38:46)
                             'size'  3000104