======================== unified (from filesystem) ========================
                                         'bitrate'  '160.0'
                                        'duration'  '182'
                                          'artist'  'Willy Berking'
                                     'text_people'  ''
                                         'release'  'Philips P 10217 R'
                                           'title'  'Oh Heideröslein'
                                           'quals'  ("['Q-HAP-3', 'Q-JZFKS-1', 'Q-UNU-2', 'Q-LOCALNESS-3', 'Q-HHRNBTT-1', "
 "'Q-OLDST-1', 'q-syn-1', 'q-bass-2', 'q-busy-3', 'q-grit-2', 'q-play-2', "
 "'q-chart-1', 'q-drums-1', 'q-other-3', 'q-piano-1', 'q-vocals-4', "
 "'q-mixbeat-1']")
                                      'lastfmtags'  "['ortsa swing', 'edhits', 'myhitparade', 'deutsche schlager', 'swing']"
                             'musicbrainz_albumid'  ''
                       'musicbrainz_albumartistid'  ''
                            'musicbrainz_artistid'  ''
                             'musicbrainz_trackid'  ''
                                     'tracknumber'  ''
                                      'tracktotal'  ''
                                            'date'  '1953'
                                        'comments'  ''
                                           'genre'  'loc-eur-germany'
                                             'bpm'  '123.632'
                                             'key'  '9B'
                                        'acoustid'  ''
rest: ''

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

'TALB' (Album/Movie/Show title)                     'Philips P 10217 R'
'TBPM' (BPM (beats per minute))                     '123.632'
'TCON' (Content type, a.k.a. Genre)                 'loc-eur-germany'
'TDRC' (Recording time)                             '1953'
'TIT2' (Title/songname/content description)         'Oh Heideröslein'
'TKEY' (Initial key)                                '9B'
'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'                                       '2'
'TXXX:q-busy'                                       '3'
'TXXX:q-chart'                                      '1'
'TXXX:q-drums'                                      '1'
'TXXX:q-grit'                                       '2'
'TXXX:q-mixbeat'                                    '1'
'TXXX:q-other'                                      '3'
'TXXX:q-piano'                                      '1'
'TXXX:q-play'                                       '2'
'TXXX:q-syn'                                        '1'
'TXXX:q-vocals'                                     '4'
'TXXX:replaygain_track_gain'                        '+1.97 dB'
'TXXX:replaygain_track_peak'                        '0.472734'

========================== row from database ==========================
                                              'id'  1449485
                                            'path'  /data/Music/Bulk/00blues-jazz-exotica-oldies-country/00oldiepop/1953/Willy Berking - Oh Heideröslein 1953.mp3
                                         'working'  None
                                         'bitrate'  160
                                    'duration_sec'  182
                                           'genre'  loc-eur-germany
                                        'filesize'  3655474
                                           'mtime'  1621627822
                                   'redo_metaread'  0
                                        'rest_str'   00blues jazz exotica oldies country 00oldiepop 1953 1953 loc eur germany
                                      'tag_artist'  Willy Berking
                                     'tag_release'  Philips P 10217 R
                                       'tag_title'  Oh Heideröslein
                                             'bpm'  123.632
                                    'search_title'  'heideroslein':2,3 'oh':1
                                   'search_artist'  'berking':2 'willy':1
                                  'search_release'  '10217':3 'p':2 'philips':1 'r':4
                                     'search_rest'  '00oldiepop':5 '1953':6 'country':4 'eur':8 'exotica':2 'germany':9 'jazz':1 'loc':7 'oldies':3
                                    'search_combo'  '00oldiepop':14 '10217':8C '1953':15 'berking':5B 'country':13 'eur':17 'exotica':11 'germany':18 'heideroslein':2A,3A 'jazz':10 'loc':16 'oh':1A 'oldies':12 'p':7C 'philips':6C 'r':9C 'willy':4B
                                    'tag_tracknum'  None
                                      'num_images'  0
                                             'key'  9B
                                           'quals'  ['Q-HHRNBTT-1', 'q-vocals-4', '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-3', 'Q-HAP-3', 'q-bass-2', 'q-grit-2']
                                      'lastfmtags'  ['ortsa swing', 'edhits', 'myhitparade', 'deutsche schlager', 'swing']
                                        'tag_date'  1953
                                     'discogstags'  []

============================== file details ==============================
                                           'mtime'  1621627822.3759913  (2021-05-21 22:10:22)
                             'size'  3655474