======================== unified (from filesystem) ========================
                                         'bitrate'  '192.0'
                                        'duration'  '166'
                                          'artist'  'Frank Zappa'
                                     'text_people'  ''
                                         'release'  'Burnt Weeny Sandwich'
                                           'title'  'Aybe Sea'
                                           'quals'  ("['Q-HAP-2', 'Q-LOCALNESS-1', 'Q-UNU-2', 'Q-OLDST-2', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'q-syn-2', 'Q-PLAY-2', 'q-bass-1', 'q-busy-3', 'q-grit-3', "
 "'Q-PIANO-4', 'q-chart-3', 'q-drums-1', 'q-other-3', 'q-vocals-1', "
 "'q-mixbeat-2']")
                                      'lastfmtags'  "['classic rock', 'jazz', 'progressive rock', 'experimental', 'rock']"
                                     'discogstags'  "['fusion', 'avantgarde', 'prog rock', 'jazz', 'rock']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '7'
                                      'tracktotal'  ''
                                            'date'  '1970'
                                        'comments'  ''
                                           'genre'  'ifs-songwriter-experimental'
                                             'bpm'  '85.417'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Burnt Weeny Sandwich'
'TBPM' (BPM (beats per minute))                     '85.417'
'TCON' (Content type, a.k.a. Genre)                 'ifs-songwriter-experimental'
'TDRC' (Recording time)                             '1970'
'TIT2' (Title/songname/content description)         'Aybe Sea'
'TKEY' (Initial key)                                '12B'
'TPE1' (Lead performer(s)/Soloist(s))               'Frank Zappa'
'TRCK' (Track number/Position in set)               '7'
'TXXX:Q-HAP'                                        '2'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '4'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:discogstags'                                  ['fusion', 'avantgarde', 'prog rock', 'jazz', 'rock']
'TXXX:lastfmtags'                                   ['classic rock', 'jazz', 'progressive rock', 'experimental', 'rock']
'TXXX:q-bass'                                       '1'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '3'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '1'
'TXXX:replaygain_track_gain'                        '-0.01 dB'
'TXXX:replaygain_track_peak'                        '0.770703'

========================== row from database ==========================
                                              'id'  472710
                                            'path'  /data/Music/Bulk/00singer-songwriter-eos/Frank Zappa/1970 - Burnt Weeny Sandwich/07 - Aybe Sea.mp3
                                         'working'  None
                                         'bitrate'  192
                                    'duration_sec'  166
                                           'genre'  ifs-songwriter-experimental
                                        'filesize'  3996497
                                           'mtime'  1636400801
                                   'redo_metaread'  0
                                        'rest_str'   00singer songwriter eos 1970 07 ifs songwriter experimental
                                      'tag_artist'  Frank Zappa
                                     'tag_release'  Burnt Weeny Sandwich
                                       'tag_title'  Aybe Sea
                                             'bpm'  85.417
                                    'search_title'  'aybe':1 'sea':2
                                   'search_artist'  'frank':1 'zappa':2
                                  'search_release'  'burnt':1 'sandwich':3 'weeny':2
                                     'search_rest'  '00singer':1 '1970':4 'eos':3 'experimental':6 'ifs':5 'songwriter':2
                                    'search_combo'  '00singer':8 '1970':11 'aybe':1A 'burnt':5C 'eos':10 'experimental':13 'frank':3B 'ifs':12 'sandwich':7C 'sea':2A 'songwriter':9 'weeny':6C 'zappa':4B
                                    'tag_tracknum'  7
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-1', 'Q-LOCALNESS-1', 'q-mixbeat-2', 'Q-PIANO-4', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-2', 'q-chart-3', 'q-other-3', 'Q-HAP-2', 'Q-PLAY-2', 'q-bass-1', 'q-grit-3']
                                      'lastfmtags'  ['classic rock', 'jazz', 'progressive rock', 'experimental', 'rock']
                                        'tag_date'  1970
                                     'discogstags'  ['fusion', 'avantgarde', 'prog rock', 'jazz', 'rock']

============================== file details ==============================
                                           'mtime'  1636400801.0348735  (2021-11-08 20:46:41)
                             'size'  3996497