======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '158'
                                          'artist'  'Willy Berking'
                                     'text_people'  ''
                                         'release'  ''
                                           'title'  'Fur Eine Nacht Voller Selligkeit (vocal - Rudi Schuricke)'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-LOCALNESS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-3', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-4', 'q-piano-1', 'q-vocals-2', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['ortsa swing', 'edhits', 'myhitparade', 'deutsche schlager', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1940'
                                        'comments'  ''
                                           'genre'  'loc-eur-germany'
                                             'bpm'  '99.1'
                                             'key'  '5B'
                                        'acoustid'  ''
rest: ''

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

'APIC:'                                             type PictureType.COVER_FRONT (Cover (front)) b''
                                     
'COMM:MusicMatch_Bio:eng'                           'Sound edited by Breda4@hotmail.com'
'TBPM' (BPM (beats per minute))                     '99.1'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-germany'
'TDRC' (Recording time)                             '1940-09'
'TIT2' (Title/songname/content description)         'Fur Eine Nacht Voller Selligkeit (vocal - Rudi Schuricke)'
'TKEY' (Initial key)                                '5B'
'TLEN' (Length)                                     '158000'
'TPE1' (Lead performer(s)/Soloist(s))               'Willy Berking'
'TXXX:Q-HAP'                                        '3'
'TXXX:Q-HHRNBTT'                                    '1'
'TXXX:Q-JZFKS'                                      '1'
'TXXX:Q-LOCALNESS'                                  '3'
'TXXX:Q-OLDST'                                      '1'
'TXXX:Q-UNU'                                        '2'
'TXXX:lastfmtags'                                   ['ortsa swing', 'edhits', 'myhitparade', 'deutsche schlager', 'swing']
'TXXX:q-bass'                                       '3'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '4'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '2'
'TXXX:replaygain_track_gain'                        '+1.68 dB'
'TXXX:replaygain_track_peak'                        '0.768234'

========================== row from database ==========================
                                              'id'  1474832
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1940/Willy Berking - Für Eine Nacht Voller Selligkeit (vocal - Rudi Schuricke) -9-1940.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  158
                                           'genre'  loc-eur-germany
                                        'filesize'  3207176
                                           'mtime'  1621627522
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1940 Für 9 1940 loc eur germany
                                      'tag_artist'  Willy Berking
                                     'tag_release'  None
                                       'tag_title'  Fur Eine Nacht Voller Selligkeit (vocal - Rudi Schuricke)
                                             'bpm'  99.1
                                    'search_title'  'eine':2 'fur':1 'nacht':3 'rudi':8 'schuricke':9,10 'selligkeit':5 'vocal':6,7 'voller':4
                                   'search_artist'  'berking':2 'willy':1
                                  'search_release'  
                                     'search_rest'  '00oldiepop':5 '1940':6 '9':9 'country':4 'eur':11 'exotica':2 'fur':7,8 'germany':12 'jazz':1 'loc':10 'oldies':3
                                    'search_combo'  '00oldiepop':17 '1940':18 '9':21 'berking':12B 'country':16 'eine':2A 'eur':23 'exotica':14 'fur':1A,19,20 'germany':24 'jazz':13 'loc':22 'nacht':3A 'oldies':15 'rudi':8A 'schuricke':9A,10A 'selligkeit':5A 'vocal':6A,7A 'voller':4A 'willy':11B
                                    'tag_tracknum'  None
                                      'num_images'  1
                                             'key'  5B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-2', 'Q-LOCALNESS-3', 'q-piano-1', 'q-mixbeat-1', 'q-play-2', 'Q-OLDST-1', 'Q-UNU-2', 'Q-JZFKS-1', 'q-busy-3', 'q-drums-1', 'q-syn-1', 'q-chart-1', 'q-other-4', 'Q-HAP-3', 'q-bass-3', 'q-grit-2']
                                      'lastfmtags'  ['ortsa swing', 'edhits', 'myhitparade', 'deutsche schlager', 'swing']
                                        'tag_date'  1940
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627521.6820312  (2021-05-21 22:05:21)
                             'size'  3207176