======================== unified (from filesystem) ========================
                                         'bitrate'  '112.0'
                                        'duration'  '235'
                                          'artist'  'The Muppets'
                                     'text_people'  ''
                                         'release'  'Kermit Unpigged'
                                           'title'  'Wild Thing'
                                           'quals'  "['q-bass-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '8'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'soundtrack,amusing'
                                             'bpm'  '89.6'
                                             'key'  '8A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Kermit Unpigged'
'TBPM' (BPM (beats per minute))                     '89.6'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack,amusing'
'TIT2' (Title/songname/content description)         'Wild Thing'
'TKEY' (Initial key)                                '8A'
'TPE1' (Lead performer(s)/Soloist(s))               'The Muppets'
'TRCK' (Track number/Position in set)               '8'
'TXXX:q-bass'                                       '4'
'TXXX:q-drums'                                      '3'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '-0.70 dB'
'TXXX:replaygain_track_peak'                        '0.626977'

========================== row from database ==========================
                                              'id'  1538761
                                            'path'  /data/Music/Other/PrevSet/[9amusing]/MBZ;#The Muppets;#Kermit Unpigged;#08;#Wild Thing.mp3
                                         'working'  None
                                         'bitrate'  112
                                    'duration_sec'  235
                                           'genre'  soundtrack,amusing
                                        'filesize'  3300193
                                           'mtime'  1662800557
                                   'redo_metaread'  0
                                        'rest_str'   PrevSet [9amusing] MBZ;#The Muppets;#Kermit Unpigged;#08;#Wild soundtrack,amusing
                                      'tag_artist'  The Muppets
                                     'tag_release'  Kermit Unpigged
                                       'tag_title'  Wild Thing
                                             'bpm'  89.6
                                    'search_title'  'thing':2 'wild':1
                                   'search_artist'  'muppets':2 'the':1
                                  'search_release'  'kermit':1 'unpigged':2
                                     'search_rest'  '08':13,16 '9amusing':2,3 'amusing':19,21 'kermit':9,11 'mbz':4,6 'muppets':8,10 'prev':22 'prevset':1 'set':23 'soundtrack':18,20 'the':5,7 'unpigged':12,15 'wild':14,17
                                    'search_combo'  '08':19,22 '9amusing':8,9 'amusing':25,27 'kermit':5C,15,17 'mbz':10,12 'muppets':4B,14,16 'prev':28 'prevset':7 'set':29 'soundtrack':24,26 'the':3B,11,13 'thing':2A 'unpigged':6C,18,21 'wild':1A,20,23
                                    'tag_tracknum'  8
                                      'num_images'  0
                                             'key'  8A
                                           'quals'  ['q-bass-4', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-3']
                                      'lastfmtags'  []
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1662800557.3646216  (2022-09-10 11:02:37)
                             'size'  3300193