======================== unified (from filesystem) ========================
                                         'bitrate'  '256.0'
                                        'duration'  '244'
                                          'artist'  'Pavarotti & Friends'
                                     'text_people'  ''
                                         'release'  'Together For The Children Of Bosnia'
                                           'title'  'Per Colpa Di Chi?'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-4', 'q-other-3', 'q-piano-1', 'q-vocals-3', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['luciano pavarotti', 'ballad']"
                                     'discogstags'  ("['pop rock', 'contemporary', 'classical', 'rock', 'pop', 'classical', 'folk, "
 "world, & country']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1996'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '127.0'
                                             'key'  '12B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Together For The Children Of Bosnia'
'TBPM' (BPM (beats per minute))                     '127.0'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '1996'
'TFLT' (File type)                                  '/3'
'TIT2' (Title/songname/content description)         'Per Colpa Di Chi?'
'TKEY' (Initial key)                                '12B'
'TMED' (Media type)                                 '(CD/DD)'
'TPE1' (Lead performer(s)/Soloist(s))               'Pavarotti & Friends'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '1'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '1'
'TXXX:discogstags'                                  ['pop rock',
 'contemporary',
 'classical',
 'rock',
 'pop',
 'classical',
 'folk, world, & country']
'TXXX:lastfmtags'                                   ['luciano pavarotti', 'ballad']
'TXXX:original release date'                        ['2005', '1996']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '4'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '3'
'TXXX:replaygain_track_gain'                        '+1.36 dB'
'TXXX:replaygain_track_peak'                        '0.685838'

========================== row from database ==========================
                                              'id'  1214173
                                            'path'  /data/Music/Bulk/00instruments-classical/Pavarotti/Pavarotti & friends/01 - Pavarotti & Friends - Per Colpa Di Chi-.mp3
                                         'working'  None
                                         'bitrate'  256
                                    'duration_sec'  244
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  7810590
                                           'mtime'  1620561733
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical friends 01 prerock classical classical instruments
                                      'tag_artist'  Pavarotti & Friends
                                     'tag_release'  Together For The Children Of Bosnia
                                       'tag_title'  Per Colpa Di Chi?
                                             'bpm'  127.0
                                    'search_title'  'chi':4 'colpa':2 'di':3 'per':1
                                   'search_artist'  'friends':2 'pavarotti':1
                                  'search_release'  'bosnia':6 'children':4 'for':2 'of':5 'the':3 'together':1
                                     'search_rest'  '00instruments':1 'classical':2 'friends':3 'instruments':5 'prerock':4
                                    'search_combo'  '00instruments':13 'bosnia':12C 'chi':4A 'children':10C 'classical':14 'colpa':2A 'di':3A 'for':8C 'friends':6B,15 'instruments':17 'of':11C 'pavarotti':5B 'per':1A 'prerock':16 'the':9C 'together':7C
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  12B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-3', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-3', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-4', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['luciano pavarotti', 'ballad']
                                        'tag_date'  1996
                                     'discogstags'  ['pop rock', 'contemporary', 'classical', 'rock', 'pop', 'classical', 'folk, world, & country']

============================== file details ==============================
                                           'mtime'  1620561733.2607934  (2021-05-09 14:02:13)
                             'size'  7810590