======================== unified (from filesystem) ========================
                                         'bitrate'  '320.0'
                                        'duration'  '89'
                                          'artist'  'Estampie'
                                     'text_people'  ''
                                         'release'  'Ludus Danielis'
                                           'title'  'Numquid Dari Observari'
                                           'quals'  ("['Q-HAP-3', 'Q-UNU-1', 'Q-OLDST-1', 'Q-LOCALNESS-2', 'Q-JZFKS-1', "
 "'Q-HHRNBTT-1', 'Q-PLAY-3', 'q-syn-1', 'q-bass-1', 'q-busy-3', 'q-grit-2', "
 "'Q-PIANO-2', 'q-chart-2', 'q-drums-1', 'q-other-3', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['medieval', 'mittelalter', 'medieval folk', 'german', 'ethereal', 'folk']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  '16'
                                      'tracktotal'  '20'
                                            'date'  '1994'
                                        'comments'  ''
                                           'genre'  'ifs-folk-classical'
                                             'bpm'  '107.3'
                                             'key'  '10B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Ludus Danielis'
'TBPM' (BPM (beats per minute))                     '107.3'
'TCON' (Content type, a.k.a. Genre)                 'ifs-folk-classical'
'TDRC' (Recording time)                             '1994'
'TIT2' (Title/songname/content description)         'Numquid Dari Observari'
'TKEY' (Initial key)                                '10B'
'TPE1' (Lead performer(s)/Soloist(s))               'Estampie'
'TRCK' (Track number/Position in set)               '16/20'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '2'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-PIANO'                                      '2'
'TXXX:Q-PLAY'                                       '3'
'TXXX:Q-UNU'                                        '1'
'TXXX:lastfmtags'                                   ['medieval', 'mittelalter', 'medieval folk', 'german', 'ethereal', 'folk']
'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'                                      '3'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '-2.21 dB'
'TXXX:replaygain_track_peak'                        '0.783243'

========================== row from database ==========================
                                              'id'  372779
                                            'path'  /data/Music/Bulk/00instruments-classical/Estampie/1994 - Ludus Danielis/16. Numquid Dari Observari.mp3
                                         'working'  None
                                         'bitrate'  320
                                    'duration_sec'  89
                                           'genre'  ifs-folk-classical
                                        'filesize'  3594529
                                           'mtime'  1620563222
                                   'redo_metaread'  0
                                        'rest_str'   00instruments classical 1994 16. ifs folk classical
                                      'tag_artist'  Estampie
                                     'tag_release'  Ludus Danielis
                                       'tag_title'  Numquid Dari Observari
                                             'bpm'  107.3
                                    'search_title'  'dari':2 'numquid':1 'observari':3
                                   'search_artist'  'estampie':1
                                  'search_release'  'danielis':2 'ludus':1
                                     'search_rest'  '00instruments':1 '16':4,5 '1994':3 'classical':2 'folk':7 'ifs':6
                                    'search_combo'  '00instruments':7 '16':10,11 '1994':9 'classical':8 'danielis':6C 'dari':2A 'estampie':4B 'folk':13 'ifs':12 'ludus':5C 'numquid':1A 'observari':3A
                                    'tag_tracknum'  16
                                      'num_images'  0
                                             'key'  10B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-2', 'q-mixbeat-1', 'Q-PIANO-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-2', 'q-other-3', 'Q-HAP-3', 'Q-PLAY-3', 'q-bass-1', 'q-grit-2']
                                      'lastfmtags'  ['medieval', 'mittelalter', 'medieval folk', 'german', 'ethereal', 'folk']
                                        'tag_date'  1994
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1620563221.6182485  (2021-05-09 14:27:01)
                             'size'  3594529