======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '176'
                                          'artist'  'Mr & Miss Zuckerberg'
                                     'text_people'  ''
                                         'release'  'Favorite 1-29242'
                                           'title'  "Abraham Und Sarah (aus ' Opferung Isaaks ')"
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-LOCALNESS-1', 'Q-UNU-1', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-1', 'q-busy-2', 'q-grit-1', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-1', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1909'
                                        'comments'  ''
                                           'genre'  'prerock-unsorted'
                                             'bpm'  '120.185'
                                             'key'  '9A'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Favorite 1-29242'
'TBPM' (BPM (beats per minute))                     '120.185'
'TCON' (Content type, a.k.a. Genre)                 'prerock-unsorted'
'TDRC' (Recording time)                             '1909'
'TIT2' (Title/songname/content description)         "Abraham Und Sarah (aus ' Opferung Isaaks ')"
'TKEY' (Initial key)                                '9A'
'TPE1' (Lead performer(s)/Soloist(s))               'Mr & Miss Zuckerberg'
'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'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '1'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '1'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+2.04 dB'
'TXXX:replaygain_track_peak'                        '0.469179'

========================== row from database ==========================
                                              'id'  1502360
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1909/Mr & Miss Zuckerberg - Abraham Und Sarah (aus _ Opferung Isaaks _) 28-06-1909.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  176
                                           'genre'  prerock-unsorted
                                        'filesize'  3526450
                                           'mtime'  1621697732
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1909 _ _) 28 06 1909 prerock unsorted
                                      'tag_artist'  Mr & Miss Zuckerberg
                                     'tag_release'  Favorite 1-29242
                                       'tag_title'  Abraham Und Sarah (aus ' Opferung Isaaks ')
                                             'bpm'  120.185
                                    'search_title'  'abraham':1 'aus':4,5 'isaaks':7 'opferung':6 'sarah':3 'und':2
                                   'search_artist'  'miss':2 'mr':1 'zuckerberg':3
                                  'search_release'  '1':2 '129242':4 '29242':3 'favorite':1
                                     'search_rest'  '00oldiepop':5 '1909':6 '28':7 'country':4 'exotica':2 'jazz':1 'oldies':3 'prerock':8 'unsorted':9
                                    'search_combo'  '00oldiepop':19 '1':12C '129242':14C '1909':20 '28':21 '29242':13C 'abraham':1A 'aus':4A,5A 'country':18 'exotica':16 'favorite':11C 'isaaks':7A 'jazz':15 'miss':9B 'mr':8B 'oldies':17 'opferung':6A 'prerock':22 'sarah':3A 'und':2A 'unsorted':23 'zuckerberg':10B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9A
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', 'Q-LOCALNESS-1', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-1', 'Q-JZFKS-1', 'q-busy-2', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-1', 'Q-HAP-3', 'q-bass-1', 'q-grit-1']
                                      'lastfmtags'  []
                                        'tag_date'  1909
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621697732.082131  (2021-05-22 17:35:32)
                             'size'  3526450