======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '816'
                                          'artist'  'Ivor Cutler'
                                     'text_people'  ''
                                         'release'  'A Wet Handle - Series 01'
                                           'title'  'A Wet Handle - S01 - E03'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-OLDST-2', 'Q-LOCALNESS-1', 'Q-UNU-2', "
 "'Q-HHRNBTT-1', 'Q-PLAY-2', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-2', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['spoken word', 'humour', 'poetry', 'scottish', 'john peel', 'comedy']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '3'
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'entertaining-eccentric'
                                             'bpm'  '118.845'
                                             'key'  '6A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'A Wet Handle - Series 01'
'TBPM' (BPM (beats per minute))                     '118.845'
'TCON' (Content type, a.k.a. Genre)                 'entertaining-eccentric'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'A Wet Handle - S01 - E03'
'TKEY' (Initial key)                                '6A'
'TPE1' (Lead performer(s)/Soloist(s))               'Ivor Cutler'
'TRCK' (Track number/Position in set)               '3'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '2'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['spoken word', 'humour', 'poetry', 'scottish', 'john peel', 'comedy']
'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'                                      '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.96 dB'
'TXXX:replaygain_track_peak'                        '0.587752'

========================== row from database ==========================
                                              'id'  1339568
                                            'path'  /data/Music/Bulk/00spent/Ivor Cutler/A Wet Handle - S01 - E03.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  816
                                           'genre'  entertaining-eccentric
                                        'filesize'  13061740
                                           'mtime'  1620647305
                                   'redo_metaread'  0
                                        'rest_str'   00spent entertaining eccentric
                                      'tag_artist'  Ivor Cutler
                                     'tag_release'  A Wet Handle - Series 01
                                       'tag_title'  A Wet Handle - S01 - E03
                                             'bpm'  118.845
                                    'search_title'  'a':1 'e03':5 'handle':3 's01':4 'wet':2
                                   'search_artist'  'cutler':2 'ivor':1
                                  'search_release'  'a':1 'handle':3 'series':4 'wet':2
                                     'search_rest'  '00spent':1 'eccentric':3 'entertaining':2
                                    'search_combo'  '00spent':12 'a':1A,8C 'cutler':7B 'e03':5A 'eccentric':14 'entertaining':13 'handle':3A,10C 'ivor':6B 's01':4A 'series':11C 'wet':2A,9C
                                    'tag_tracknum'  3
                                      'num_images'  0
                                             'key'  6A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-2', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-2', 'Q-HAP-3', 'Q-PLAY-2', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['spoken word', 'humour', 'poetry', 'scottish', 'john peel', 'comedy']
                                        'tag_date'  1997
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620647305.330162  (2021-05-10 13:48:25)
                             'size'  13061740