======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '290'
                                          'artist'  'Weird Al Yankovic'
                                     'text_people'  ''
                                         'release'  'Bad Hair Day'
                                           'title'  'The Alternative Polka'
                                           'quals'  ("['Q-LOCALNESS-1', 'Q-OLDST-3', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'q-syn-2', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-3', 'q-chart-3', "
 "'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', 'q-mixbeat-2']")
                                      'lastfmtags'  "['comedy', 'parody', 'rock', 'humor', 'funny']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '5'
                                      'tracktotal'  ''
                                            'date'  ''
                                        'comments'  ''
                                           'genre'  'set-th-novelty-styledcovers;set-cover or covered'
                                             'bpm'  '118.984'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Bad Hair Day'
'TBPM' (BPM (beats per minute))                     '118.984'
'TCON' (Content type, a.k.a. Genre)                 ['set-th-novelty-styledcovers', 'set-cover or covered']
'TIT2' (Title/songname/content description)         'The Alternative Polka'
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Weird Al Yankovic'
'TRCK' (Track number/Position in set)               '5'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['comedy', 'parody', 'rock', 'humor', 'funny']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '2'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.36 dB'
'TXXX:replaygain_track_peak'                        '0.501525'

========================== row from database ==========================
                                              'id'  1342776
                                            'path'  /data/Music/Bulk/00spent/Weird Al/Weird Al Yankovic/Bad Hair Day [1996]/MBZ;#Weird Al Yankovic;#Bad Hair Day;#05;#The Alternative Polka.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  290
                                           'genre'  set-th-novelty-styledcovers;set-cover or covered
                                        'filesize'  4654568
                                           'mtime'  1620343451
                                   'redo_metaread'  0
                                        'rest_str'   00spent [1996] MBZ;#Weird Yankovic;#Bad Day;#05;#The set th novelty styledcovers;set cover or covered
                                      'tag_artist'  Weird Al Yankovic
                                     'tag_release'  Bad Hair Day
                                       'tag_title'  The Alternative Polka
                                             'bpm'  118.984
                                    'search_title'  'alternative':2 'polka':3 'the':1
                                   'search_artist'  'al':2 'weird':1 'yankovic':3
                                  'search_release'  'bad':1 'day':3 'hair':2
                                     'search_rest'  '00spent':1 '05':13,16 '1996':2,3 'bad':9,11 'cover':25 'covered':27 'day':12,15 'mbz':4,6 'novelty':20 'or':26 'set':18,22,24 'styledcovers':21,23 'th':19 'the':14,17 'weird':5,7 'yankovic':8,10
                                    'search_combo'  '00spent':10 '05':22,25 '1996':11,12 'al':5B 'alternative':2A 'bad':7C,18,20 'cover':34 'covered':36 'day':9C,21,24 'hair':8C 'mbz':13,15 'novelty':29 'or':35 'polka':3A 'set':27,31,33 'styledcovers':30,32 'th':28 'the':1A,23,26 'weird':4B,14,16 'yankovic':6B,17,19
                                    'tag_tracknum'  5
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-2', 'q-play-3', 'Q-OLDST-3', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['comedy', 'parody', 'rock', 'humor', 'funny']
                                        'tag_date'  
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620343450.53075  (2021-05-07 01:24:10)
                             'size'  4654568