======================== unified (from filesystem) ========================
                                         'bitrate'  '167.948'
                                        'duration'  '250'
                                          'artist'  'Rutter J.'
                                     'text_people'  ''
                                         'release'  'Aangenaam klassiek editie 1997'
                                           'title'  'Requiem aeternam - Requiem'
                                           'quals'  ("['Q-HAP-3', 'Q-LOCALNESS-1', 'Q-JZFKS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-2', 'q-play-3', "
 "'q-chart-3', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1997'
                                        'comments'  ''
                                           'genre'  'prerock-classical or classical instruments'
                                             'bpm'  '146.0'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Aangenaam klassiek editie 1997'
'TBPM' (BPM (beats per minute))                     '146.0'
'TCON' (Content type, a.k.a. Genre)                 'prerock-classical or classical instruments'
'TDRC' (Recording time)                             '1997'
'TIT2' (Title/songname/content description)         'Requiem aeternam - Requiem'
'TKEY' (Initial key)                                '9B'
'TPE1' (Lead performer(s)/Soloist(s))               'Rutter J.'
'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:q-bass'                                       '1'
'TXXX:q-busy'                                       '2'
'TXXX:q-chart'                                      '3'
'TXXX:q-drums'                                      '1'
'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'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.03 dB'
'TXXX:replaygain_track_peak'                        '1.006298'

========================== row from database ==========================
                                              'id'  1214021
                                            'path'  /data/Music/Bulk/00instruments-classical/Rutter J. - 18 - Requiem aeternam - Requiem.mp3
                                         'working'  None
                                         'bitrate'  167
                                    'duration_sec'  250
                                           'genre'  prerock-classical or classical instruments
                                        'filesize'  5264754
                                           'mtime'  1620561769
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical 18 prerock classical or classical instruments
                                      'tag_artist'  Rutter J.
                                     'tag_release'  Aangenaam klassiek editie 1997
                                       'tag_title'  Requiem aeternam - Requiem
                                             'bpm'  146.0
                                    'search_title'  'aeternam':2 'requiem':1
                                   'search_artist'  'j':2,3 'rutter':1
                                  'search_release'  '1997':4 'aangenaam':1 'editie':3 'klassiek':2
                                     'search_rest'  '00instruments':1 '18':3 'classical':2 'instruments':6 'or':5 'prerock':4
                                    'search_combo'  '00instruments':10 '18':12 '1997':9C 'aangenaam':6C 'aeternam':2A 'classical':11 'editie':8C 'instruments':15 'j':4B,5B 'klassiek':7C 'or':14 'prerock':13 'requiem':1A 'rutter':3B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-1', 'q-syn-1', 'q-chart-3', 'q-other-3', 'Q-HAP-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  []
                                        'tag_date'  1997
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620561769.4585536  (2021-05-09 14:02:49)
                             'size'  5264754