======================== unified (from filesystem) ========================
                                         'bitrate'  '128.0'
                                        'duration'  '284'
                                          'artist'  'Jonathan Larson'
                                     'text_people'  ''
                                         'release'  'Rent (Original Broadway Cast)'
                                           'title'  'Another Day'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-2', 'q-syn-2', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-2', "
 "'q-chart-3', 'q-drums-3', 'q-other-2', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['soundtrack', 'broadway', 'musical', 'musicals', 'rent']"
                                     'discogstags'  "['musical', 'stage & screen']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '15'
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'soundtrack-video'
                                             'bpm'  '141.710'
                                             'key'  '1A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Rent (Original Broadway Cast)'
'TBPM' (BPM (beats per minute))                     '141.710'
'TCON' (Content type, a.k.a. Genre)                 'soundtrack-video'
'TDRC' (Recording time)                             '1996'
'TIT2' (Title/songname/content description)         'Another Day'
'TKEY' (Initial key)                                '1A'
'TPE1' (Lead performer(s)/Soloist(s))               'Jonathan Larson'
'TRCK' (Track number/Position in set)               '15'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '2'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['musical', 'stage & screen']
'TXXX:lastfmtags'                                   ['soundtrack', 'broadway', 'musical', 'musicals', 'rent']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '3'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '2'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '2'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-0.24 dB'
'TXXX:replaygain_track_peak'                        '0.775675'

========================== row from database ==========================
                                              'id'  264249
                                            'path'  /data/Music/Bulk/0soundtrack/Original Broadway Cast/MBZ;#Original Broadway Cast;#Rent (disc 1);#15;#Another Day.mp3
                                         'working'  None
                                         'bitrate'  128
                                    'duration_sec'  284
                                           'genre'  soundtrack-video
                                        'filesize'  4555566
                                           'mtime'  1621699871
                                   'redo_metaread'  0
                                        'rest_str'   0soundtrack MBZ;#Original Cast;#Rent (disc 1);#15;#Another soundtrack video
                                      'tag_artist'  Jonathan Larson
                                     'tag_release'  Rent (Original Broadway Cast)
                                       'tag_title'  Another Day
                                             'bpm'  141.71
                                    'search_title'  'another':1 'day':2
                                   'search_artist'  'jonathan':1 'larson':2
                                  'search_release'  'broadway':4 'cast':5,6 'original':2,3 'rent':1
                                     'search_rest'  '0soundtrack':1 '1':12,15 '15':13,16 'another':14,17 'cast':6,8 'disc':10,11 'mbz':2,4 'original':3,5 'rent':7,9 'soundtrack':18 'video':19
                                    'search_combo'  '0soundtrack':11 '1':22,25 '15':23,26 'another':1A,24,27 'broadway':8C 'cast':9C,10C,16,18 'day':2A 'disc':20,21 'jonathan':3B 'larson':4B 'mbz':12,14 'original':6C,7C,13,15 'rent':5C,17,19 'soundtrack':28 'video':29
                                    'tag_tracknum'  15
                                      'num_images'  0
                                             'key'  1A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-2', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-3', 'q-syn-2', 'q-chart-3', 'q-other-2', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['soundtrack', 'broadway', 'musical', 'musicals', 'rent']
                                        'tag_date'  1996
                                     'discogstags'  ['musical', 'stage & screen']

============================== file details ==============================
                                           'mtime'  1621699871.1922526  (2021-05-22 18:11:11)
                             'size'  4555566